Answers
Answer:
Explanation:
ionic bonds
Answer:
C) hydrogen bonds
Explanation:
DNA is constructed of two strands, consisting of sugar molecules and phosphate groups. Between these two strands are nitrogen bases, the compounds which make up organisms' genes, with hydrogen bonds between them. Those hydrogen bonds have sometimes been seen as crucial to holding the two strands together
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What are consumers known as?
Answers
Answer:
Like sea angels, they take in organic molecules by consuming other organisms, so they are commonly called consumers. Heterotrophs can be classified by what they usually eat as herbivores, carnivores, omnivores, or decomposers.
Explanation:
Brainliest please? It would really help me out!
Deserts are ecosystems that generally have high daytime temperatures and
receive very little rain. A plant that is well suited to the desert is likely to have
which structural adaptation?
Answers
Some examples of structural adaptations well suited for deserts are:
Reduced Leaf Surface Area.Deep Root Systems.Waxy/Thick Cuticles.Which structural adaptation is well suited for deserts?A plant that is well-suited to the desert environment is likely to have some of the following structural adaptations:
Reduced Leaf Surface Area: Desert plants often have small or spiky leaves to minimize water loss through evaporation. This adaptation helps reduce the surface area exposed to the hot and dry conditions, reducing water loss through transpiration. Examples include desert shrubs and some grasses.
Deep Root Systems: Desert plants often have deep root systems that can reach groundwater sources. These extensive root structures allow the plants to access water from deep underground, where moisture may be available even during prolonged dry spells. Desert shrubs like mesquite and desert trees like the Joshua tree exhibit deep root systems.
Waxy or Thick Cuticles: Desert plants may have waxy or thick cuticles covering their leaves and stems. This adaptation helps to reduce water loss through evaporation and protects the plant from the intense heat and dryness of the desert environment. Plants such as desert lavender and creosote bush exhibit this adaptation.
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In a ________ economic system, the state has broad powers to serve the public interest as it sees fit.
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In a centrally planned socialism economic system, the state has broad powers to serve the public interest as it sees fit.
What is economic system ?A country's or a region's economic system is how societies or governments manage and distribute the resources, services, and goods that are readily available. Land, capital, labor, and physical resources are all subject to economic system regulation. A traditional economy, a mixed economy, a pure command economy, and a pure market economy are the four primary categories of economic systems.
What Is a Centrally Planned Economy ?A centrally planned economy, commonly referred to as a command economy, is a form of capitalism where decisions about the production and distribution of goods are made by the government.
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What is the name of the field of research where scientists have learned how to design the structure and function of DNA?
molecular biology
genetic engineering
cell biology
cloning
Answers
Answer:
genetic engineering
Explanation:
I just took the test
Identify each of the following as an example of a scientific theory, a model, or a hypothesis. - In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a - A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a - Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a - The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a Why is it important for biologists and people in biology-related fields to learn physics? Select all that are correct. To learn how to solve complex problems To learn how to communicate scientific ideas To learn how to apply fundamental principles with logic and reasoning To learn how to plug numbers into equations and calculate answers To learn how to use math in science and make estimates To learn how to interpret and apply different representations of information To learn how to interpret quantitative measurements
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- In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a model.
- A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a hypothesis.
- Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a scientific theory.
- The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a model.
It is important for biologists and people in biology-related fields to learn physics because:
- To learn how to solve complex problems
- To learn how to communicate scientific ideas
- To learn how to apply fundamental principles with logic and reasoning
- To learn how to interpret and apply different representations of information
- To learn how to interpret quantitative measurements
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Identify the following situations as a hypothesis, a theory, or a model.
i. In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are.
ii. Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations.
iii. A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer.
A) i. - hypothesis; ii. - theory; iii. - model
B) i. - model; ii. - theory; iii. - hypothesis
C) i. - theory; ii. - hypothesis; iii. - model
D) i. - model; ii. - hypothesis; iii. - theory
E) i. - theory; ii. - model; iii. - hypothesis
which stage of meiosis is a primary oocyte arrested? secondary oocyte?
Answers
The primary oocyte is arrested in the prophase stage of meiosis I until puberty, which means it is in a state of meiotic arrest for several years.
During this stage, the oocyte undergoes DNA replication, pairing of homologous chromosomes, and formation of a bivalent structure. Once puberty occurs, the primary oocyte resumes meiosis I and undergoes division, producing a secondary oocyte and a polar body.
The secondary oocyte is then arrested in the metaphase stage of meiosis II until fertilization occurs. At that point, meiosis II resumes and produces a mature ovum and another polar body.
The secondary oocyte is much larger than the polar body, and it contains most of the cytoplasm and organelles necessary for fertilization and early embryonic development.
Overall, the arrest of the primary and secondary oocytes at different stages of meiosis is essential for proper oocyte development and fertilization.
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consequences of cardiac myocyte-specific ablation of katp channels in transgenic mice expressing dominant negative kir6 subunits
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These mice gained weight and developed after birth similarly to non-transgenic mice, however an increased mortality was seen after 4-5 mo. As shown by patch clamp methods, cardiac KATP channel activity was absent in transgenic animals. The action potential duration was prolonged in these mice, which is consistent with a reduced current density seen at positive voltages.
What is cardiac myocyte ?The primary functioning unit of the organ is the cardiac myocyte. A lipid membrane that is supported by a collagenous cytoskeleton physically separates the cell from the outside world. Although the membrane is impervious to ions and the majority of substances, proteins placed into it allow ions and other substances to pass through.
The cells that produce contractile force in an undamaged heart are known as cardiomyocytes. The cardiac conduction system, which is in charge of controlling the heart's rhythmic beating, is made up of specialised cardiomyocytes.Learn more about Cardiac myocyte here:
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determine the series of hormonal events that leads to birth. oxytocin stimulates the placenta to secrete prostaglandins. fetal cortisol stimulates the placenta to secrete estrogen. prostaglandins dilate the cervix, and with oxytocin, increase the strength of uterine contractions. the high estrogen level stimulates the uterus to form oxytocin receptors.
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The series of hormonal events that leads to birth is a complex and highly regulated process. It starts with the release of oxytocin, a hormone that stimulates the placenta to secrete prostaglandins.
Prostaglandins are known to dilate the cervix, which is necessary for the baby to pass through the birth canal. At the same time, oxytocin also increases the strength of uterine contractions, which helps to push the baby out.
Another important hormone in the process of birth is estrogen. Fetal cortisol stimulates the placenta to secrete estrogen, which plays a crucial role in preparing the uterus for birth. The high level of estrogen in the body stimulates the uterus to form oxytocin receptors, making it more sensitive to the effects of oxytocin.
Overall, the interplay of these hormones and the subsequent physiological changes they trigger lead to the onset of labor and the delivery of the baby. While this process can be influenced by a variety of factors, including environmental and genetic factors, the hormonal events that lead to birth are essential for ensuring a healthy delivery.
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What is the cause for a new trait this badger may exhibit?
A. DNA mutation
B. Natural selection
C. It's not possible to see a new trait if neither parent had it.
Answers
Describe the cell structure of a typical animal cell. Give the functions of each part of the cell structure.
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A typical animal cell consists of cell membrane, a well developed nucleus, and cell organelles.
What is a cell?A cell is a basic fundamental structural and functional unit of the body.
A typical animal cell consists of:
Cell membrane: it is required to protect the cell from incoming foreign substances and also prevent the unwanted movement of materials from inside to outside of the cell.Cytoplasm: it is the fluid part of the cell that contain several cell organelles like endoplasmic reticulum, Golgi bodies, ribosome, lysosomes, etc.Nucleus: it is the brain of the cell that controls each and every activity of the cell. It contains genetic material in the form of chromatin material.Thus, this is a typical animal cell structure.
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who were the discoverers of dna? select all that apply. gregor mendel james watson francis crick maurice wilkins charles darwin
Answers
The discoverers of DNA are b. James Watson, c. Francis Crick, and d. Maurice Wilkins
DNA or Deoxyribonucleic acid is a double-stranded, helical nucleic acid molecule that stores genetic information used in the growth, development, functioning, and reproduction of all known living organisms. The discoverers of DNA are James Watson, Francis Crick, and Maurice Wilkins. They were all awarded the Nobel Prize in Physiology or Medicine in 1962.The research was based on Rosalind Franklin's pioneering X-ray crystallography work and established a physical basis for heredity, for which they won the Nobel Prize in Physiology or Medicine in 1962.
Gregor Mendel and Charles Darwin are not credited with the discovery of DNA. Gregor Mendel is recognized as the father of genetics for his research on the inheritance of traits in pea plants, while Charles Darwin's work on evolution focused on the idea of natural selection. So therefore b. James Watson, c. Francis Crick, and d. Maurice Wilkins are credited with the discovery of DNA.
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For reporting purposes, the definition for "other diagnoses" is interpreted as additional conditions that affect patient care in terms of requiring
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additional treatment, monitoring, or management, beyond the patient's primary diagnosis. "Other diagnoses" are also known as comorbidities or co-occurring conditions.
These conditions may not be the primary reason for the patient's hospitalization or medical visit but can have a significant impact on their overall health and healthcare needs. Examples of "other diagnoses" include hypertension, diabetes, depression, and asthma, among others. Proper documentation of "other diagnoses" is important for accurate and comprehensive medical records, appropriate resource allocation, and effective care coordination.
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white leghorns have a doubly dominant genotype for feather color (aa bb) while white wyandottes have a doubly recessive genotype (aa bb). a cross between these chickens produces white birds with the hybrid genotype. the alleles of these two genes exhibit dominant epistasis: b is epistatic to a, such that chickens containing the a allele have red feathers only in the absence of the b allele. based on that information, would you expect to see red-colored chickens in the f2 generation (produced by crossing the above-mentioned f1 hybrids) and in what ratio?
Answers
Since b is epistatic to a such that chickens containing, a allele have red feathers only in the absence of the b allele. On the basis of that information, we can expect that there is a chance of red-colored chickens in the F₂ generation.
What is epistasis?Epistasis is a phenomenon where the expression of one gene is affected by the expression of one or more independently inherited genes. It is the conditional relationship between two genes that can determine a single phenotype of some traits.
Dominant epistasis is the phenomenon when the dominant allele of one gene hides the expression of all alleles of another gene In this process expression of one dominant or recessive allele is masked by another dominant gene.
So, according to this data, we can say that the probability of having red-colored genes in the next generation is very less.
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What causes the Pacific Ring of Fire to have so many volcanoes.
Answers
what are the 4 Chambers of heart?
Answers
Answer:
The four chambers of the heart are the two upper and two lower chambers.
Explanation:
The four chambers of the heart are the two upper and two lower chambers.
The upper chambers are the right atria and the left atria, and the two atrias receive blood. The lower chambers are the right and left ventricles, and the two ventricles pump blood out of the heart.
Answer:
The heart is divided into two parts atrium and ventricle. We have left atrium, right atrium, left ventricle and right ventricle.
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The chemical equation shown represents photosynthesis.
Carbon dioxide plus A plus light with a right pointing arrow towards B plus oxygen. The arrow has an x above it.
X represents a substance in a plant involved in photosynthesis. What is its role?
It stores chemical energy for plants and animals.
It traps light energy and converts it into chemical energy.
It combines with carbon dioxide and light to form glucose.
It combines with carbon dioxide and light to form hydrogen.
Answers
The X, the substance represented in the chemical equation, plays a crucial role in photosynthesis by trapping light energy and converting it into chemical energy. The correct answer is option B.
X, the substance represented in the chemical equation, plays a crucial role in photosynthesis by trapping light energy and converting it into chemical energy. This substance is known as chlorophyll, a pigment found in plant cells.Chlorophyll is responsible for absorbing light energy from the sun during the process of photosynthesis. It is located in specialized structures called chloroplasts within plant cells. The chlorophyll molecules absorb light energy from the sun's rays, specifically in the blue and red regions of the electromagnetic spectrum.This absorbed light energy is then used to power the chemical reactions that convert carbon dioxide and water into glucose and oxygen. Through a series of complex biochemical reactions, chlorophyll facilitates the conversion of light energy into chemical energy, which is stored in the form of glucose.In summary, X, which represents chlorophyll, traps light energy and enables the conversion of carbon dioxide and water into glucose during photosynthesis.The correct answer is option B.For more questions on photosynthesis
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Question 5 One of the tests for opioid abuse involves drawing blood and treating it with a strong acid that selectively protonates hydrocodone. If this protonated compound were passed through a uniform magnetic field, how would the kinetic energy of the hydrocodone change? A. It will increase. X B. It will decrease. OC. It will stay the same. x D. It will increase, then decrease.
Answers
When the protonated compound of hydrocodone is passed through a uniform magnetic field, the kinetic energy of the hydrocodone will decrease.
Option (B) is correct.
This is because passing a charged particle through a magnetic field causes it to experience a force known as the Lorentz force. The Lorentz force is perpendicular to both the velocity of the particle and the magnetic field.
As the hydrocodone moves through the magnetic field, the Lorentz force acts on it, altering its trajectory. This change in direction requires a transfer of energy. According to the principle of conservation of energy, the energy transferred to change the direction of the hydrocodone is subtracted from its kinetic energy.
Therefore, the kinetic energy of the hydrocodone will decrease as it passes through the magnetic field. This decrease in kinetic energy can be detected and measured as part of the test for opioid abuse.
So, the correct option is (B).
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inevitable, involuntary responses to stimuli that are primarily controlled by circuits located in the spinal cord and brainstem are referred to as .
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The inevitable, involuntary responses to stimuli that are primarily controlled by circuits located in the spinal cord and brainstem are referred to as reflexes.
Reflexes are involuntary responses to certain stimuli that occur without any conscious thought. They are typically automatic and rapid responses to specific stimuli and involve both the peripheral and central nervous systems. The pathways that transmit reflex signals involve afferent and efferent nerve fibers that travel between the spinal cord and brainstem and the muscles and organs being stimulated.
For example, when a doctor taps your knee with a reflex hammer, the impulse is sent along the sensory neurons to the spinal cord and then back to the muscles of the leg causing them to contract. Other reflexes involve unconscious actions such as sweating, blinking, and pupil constriction. Reflexes play a role in coordination of muscle activities, posture, and balance and provide a basis for motor learning.
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Are bioplastics a realistic alternative to plastic
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( ENVIRONMENTAL SCIENCE DUE TODAY)
Some people argue that because Earth's resources are ultimately limited, nonstop economic growth is
A. not a problem
B. inevitable.
C. not sustainable.
D. highly desirable.
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Answer:
Highly Desirable. DExplanation:
Hope this is correct. Good luck.Describe the type of movement as either facilitated diffusion, osmosis, or diffusion.
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Answer:
1. Diffusion
2. Osmosis
3. Diffusion
4. Facilitated Diffusion
5. Osmosis
6. Diffusion
Explanation:
Facilitated Diffusion- Move molecules across the cell membrane in a passive transportation with membrane protein.
Osmosis- Move water molecules from high concentration to low concentration.
Diffusion- Evenly spread molecules from high concentration to low concentration.
1. Gases move across the room with ease without energy.
2. Water enter skin cells allowing cells to grow and wrinkle without energy.
3. Gases move with ease without energy.
4. Glucose requires energy to transfer.
5. Water leaves throat when concentration outside of throat is less that that inside the trough so water moves outwards.
6. Oxygen is uses passive diffusion does not require energy and will with ease move in and through a cell.
which is the smallest unit of life that can survive and reproduce on its own?
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The smallest unit of life that can survive and reproduce on its own is a cell. It is the fundamental building blocks of all living organisms.
Cells are the basic structural and functional units of life. They are capable of carrying out essential life processes such as metabolism, growth, reproduction, and responding to stimuli. Cells can be unicellular, meaning they exist as single, independent organisms, or they can be part of multicellular organisms, where they work together to form tissues, organs, and systems.
Unicellular organisms, such as bacteria and protozoa, consist of a single cell that performs all necessary functions for survival. They can take in nutrients, convert them into energy, eliminate waste, and reproduce to generate offspring.
In multicellular organisms, cells specialize and differentiate to perform specific functions, but they still rely on the collective functioning of individual cells for survival and reproduction.
In conclusion, cells are the smallest units of life that can function independently, survive, and reproduce on their own. They form the foundation of all living organisms and are essential for the continuation of life.
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What is phylogenetics?
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A reliable way for figuring out how current species have developed is phylogenetics. By examining phylogenetic trees, scientists can explain the similarities and differences between species and discover more about how species have evolved.
One approach of classifying organisms that display phylogeny is through the use of the clade. A clade is a group of organisms made up of an ancestor and each descendant in the lineage.
Clades are built on cladistics. This method examines traits in related species to determine ancestor-descendant connections.
Through phylogeny, the relationship between assemblages of species and their evolutionary history is shown. A phylogenetic tree, which provides a visual depiction of relationships based on like or unlike physical and genetic attributes, is used to display the results.
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If gas molecules in an enclosed space are allowed to enter a second chamber, the resulting redistribution of gas molecules represents an increase in
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If gas molecules in an enclosed space are allowed to enter a second chamber, the resulting redistribution of gas molecules represents an increase in entropy. The entropy of an enclosed system tends to increase. This is due to the fact that in an isolated system, the level of disorder or randomness, referred to as entropy, tends to increase over time.
This means that the system's energy is distributed among the particles or molecules, leading to increased randomness and a reduction in the system's energy state.
The greater the number of gas molecules, the higher the entropy. As a result, when gas molecules are transferred from one chamber to another, the system's entropy increases. When the number of gas molecules in one chamber decreases, the entropy of the system in that chamber decreases as well. The system's overall entropy, on the other hand, increases because the gas molecules have been moved from one chamber to another, causing them to become more disordered.
The entropy of a system can also be calculated using the formula ΔS = Q/T. Where ΔS is the change in entropy, Q is the energy transferred, and T is the temperature in Kelvin. When a gas expands, it does work by moving a piston or expanding into a vacuum, and as a result, it loses energy. The change in energy can be calculated using the ideal gas law, PV=nRT.
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Which if the following statements is true regarding scientific hypothesis?
Answers
Answer:
A testable hypothesis is valuable, even if evidence shows that it is false
Explanation:
Sorry it took so long hope it helps!!
Which of the following is not associated with the pons?
a. Sensory information from the inferior region of the face
b. Sensory information from the superior region of the face
c. Sensory information from the middle region of the face Lateral eye movements
Answers
The factors which is not associated with the pons is Neck Movement.
Hence, option E is correct
The pons contains nuclei that relay signals from the forebrain to the cerebellum, as well as nuclei that primarily deal with sleep, respiration, swallowing, bladder control, hearing, balance, taste, eye movement, facial expressions, facial sensation, and posture.The pons has a convex anterior surface with a shallow groove in the middle for the basilar artery on gross examination. The roof of the fourth ventricle is formed by the middle cerebellar peduncles on both sides. Pons transverse sections appear pear-shaped.To know more about Pons here
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There are 25 elements found in living things. How many of these elements are found in some organisms but not all?
Answers
Answer:
Six
Explanation:
All living things have six basic elements in common: carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur, abbreviated as CHNOPS.
The number elements that are found in some organisms but not all is 19 in number. This is further explained below.
What are elements?Generally, elements are simply defined as compounds that cannot be broken down into smaller chemicals using standard chemical procedures.
In conclusion, Some of the elements found in living things are
Oxygen (O)Carbon (C)Hydrogen (H)Nitrogen (N)Read more about elements atoms
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As a class, penicillins usually are more effective in infections caused by which type of bacteria?
Answers
In gram positive bacteria have a peptidoglycan layer outside of the cell wall. Gram negative bacteria have peptidoglycan between membranes.
The natural penicillin have activity against non beta lactamase producing gram - positive cocci, which includes such as - viridans streptococci, anaerobic streptococcus. Penicillin work indirectly bursting bacteria cell walls. It kills bacteria through binding of that betalactum ring.
Gram positive bacteria have a much thicker layer of peptidoglycan and lack of the protection of an outer membrane. This class , penicillin was first antibiotic to be used widely and prevents the final cross linking step. There are some more classes of penicillin like- natural , penicillin-stable, aminopenicillins and extended-spectrum penicillin.
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Isotopes are atoms of the same element with the same number of protons and ?
Answers
Answer:
electrons
Explanation:
Isotopes are atoms of the same element that have a different number of neutrons but the same number of protons and electrons. Having a different number of neutrons only changes the mass number of the atom, but the charge is the same.
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The man who is colorblind married a woman with normal vision. Complete the Punnett square below and write the possible genotypes and phenotypes of their children. Assume that the mother is a carrier for colorblindness.
(im guessing you will have to save this screenshot and draw on it)
Answers
Answer:
here i can help you with this
Explanation:
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