In hamsters, the allele for a brown coat color (B) dominates over the allele for a tan coat color (b). If a tan hamster is crossed with a heterozygous brown hamster, which of the following genotypic ratios can be expected? (B.6F) Question 6 options: 2 BB: 0 Bb: 2 bb 1 BB: 2 Bb: 1 bb 2 BB: 1 Bb: 0bb 0 BB: 2 Bb: 2 bb
Answers
The genotypic ratios when hamsters are crossed is Half brown, half tan, half brown, half tan. The allele of parent of brown is: Bb Tan parent allele is bb. The result when crossed is: Bb, bb, Bb, bb.
What is dominant allele?Dominance is a phenomena in genetics when one version of a gene on one copy of a chromosome obscures or overrides another version of the same gene on the other copy of the chromosome. Dominant refers to the first variant, and recessive to the second.
What is recessive allele?A particular allele that, when present alone, has no effect on the person is known as recessive allele. The expression of the trait requires the presence of two copies of the allele.
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Related Questions
Hantavirus is a relatively rare emerging infectious disease that is spread by contact with the contaminated feces and urine of rodents, such as deer mice. It does not spread between people and causes flu-like symptoms. How would scientists most likely recommend that the disease be controlled? They would encourage people to avoid people infected with hantavirus. They would offer ways to control rodent populations. They would urge infected people to take antibiotics. They would endorse not owning a barn or garage, where rodents can live.
Answers
Answer:
They would encourage people to avoid people infected with hantavirus
Answer:A
Explanation:
They would encourage people to avoid people infected with hantavirus
true or false :When Frank wanted to lose weight, it was suggested that he go to the moon where there is less gravity so he could weigh less.
Answers
Answer:
False
Explanation:
Answer:
True
Explanation:
You weigh less on the moon than you do on the Earth. I hope this helped :)
(A)
A. aa
C. A
AA
A
The gametes from the
parent in this image
will have what alleles
for the trait shown?
B. Aa
D. a
Answers
Answer:
c. A
Explanation:
hope this helps!
You love fruit in a can! When you open up that can of peaches, you notice that they look and feel just like they were fresh picked! Why do you think they can stay that way? Describe the process of osmosis in you answer
Answers
When a can of peaches opens up, the peaches look and feel just like they were just picked. This is due to the fact that the inside of the can contains an equal amount of water and sugar as the outside of the peaches.
What is the role of osmosis in food storage?Osmosis is defined as the movement of water down a concentration gradient (from high to low) through a semipermeable membrane, and that membrane can be the membrane of the cell. A can of peaches looks fresh, and this is due to the presence of proper osmolytes in the can; as a result, water cannot leak from inside or outside the peach, and apart from that, some extra chemicals are given to preserve and maintain the color and texture.
Hence, the peaches look and feel just like they were just picked. This is due to the fact that the inside of the can contains an equal amount of water and sugar as the outside of the peaches.
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Is there anyone who can help me pls in biology this is the end of the semester I need help pls
Answers
Answer:
what do you need?
Explanation:
Which option identifies the concept demonstrated in the following scenario?
Herman bred his black stallion with his white mare in the hopes that the dominant black trait would be reproduced in the offspring. The foal came out gray.
intermediate phenotype
high heritability
genetic mutation
optimal characteristic
Answers
Answer:
intermediate phenotype
Explanation:
This question illustrates INCOMPLETE DOMINANCE, which is when two alleles of a gene are neither dominant over another, hence, they produce an intermediate phenotype that is a heterozygous for the gene in question. The intermediate phenotype is a blending of both parental phenotypes.
According to this question, Herman bred his black stallion (BB) with his white mare (WW) to produce foal/offspring that came out gray (BW). This portrays that the gray phenotype is an INTERMEDIATE PHENOTYPE of black and white in a kind of inheritance pattern called INCOMPLETE DOMINANCE.
Some protists can reproduce both sexually and asexually. What's a major advantage of each?
A. Sexual reproduction increases genetic diversity, and asexual reproduction can be more rapid.
B. Sexual reproduction allows the organism to produce an exact copy of itself, and asexual reproduction can be more rapid.
C. Sexual reproduction can be more rapid, and asexual reproduction allows the organism to produce an exact copy of itself.
D. Sexual reproduction is less prone to making genetic mutations, and asexual reproduction increases genetic diversity.
Answers
Asexual reproduction has the potential for faster growth, while sexual reproduction enhances genetic diversity. In protists, sexual reproduction has the major benefit of increasing genetic.
How do protozoa reproduce both sexily and asexually?While some protists reproduce sexually using gametes, others do so asexually using binary fission. Plasmodium falciparum, which possesses both sexual and asexual variants of the organism, is an excellent illustration of a species with incredibly complex life cycles.
What is the benefit of sexual and asexual reproduction?Both approaches have benefits. A varied gene pool that can tolerate a dynamic and changing environment can be developed through sexual reproduction. Asexual reproduction is advantageous for maintaining a big, homogenous population and for species that can't move around.
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How long will it take for the object to come to a stop
Answers
Answer:
Explanation:
what object?
Why do organisms maintain fairly steady conditions within their cells and
bodies?
Answers
Answer:
Explanation:
Why do organisms maintain fairly steady conditions within their cells and bodies? They must maintain stable conditions to keep their enzymes working and generally to enable the chemical reactions of life.
⦁ Discuss normality and abnormality of sex orientation among children and adolescents in a school context
Answers
The term "adolescence," which comes from the Latin "adolescent," or "to grow up," is used to describe a crucial developmental stage. Significant biological and psychological changes occur during adolescence.
Between puberty and adulthood, adolescence is a period of significant physical and psychological growth (from the Latin adolescent, "to mature") (typically corresponding to the age of majority).
Adolescence may begin or end earlier than the teenage years, despite the fact that it is often assumed to last during these years in terms of physical, psychological, or cultural aspects. Puberty now typically begins in preadolescence, especially in girls
. Particularly in men, cognitive and physical development can continue until adolescence. Only in general terms based on age can adolescence be described, and academics cannot agree on a single definition. Some definitions start and stop as early as 10 and 25 or 26 respectively
. Anybody between the ages of 10 and 19 is considered an adolescent by the World Health Organization.
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Please help and thank you
Answers
Answer: Remove waste
Explanation: It’s a diagram of the Urinary system.
Drag the tiles to the correct boxes to complete the pairs.
Match each form of energy to its description.
gravitational potential
Answers
Motion energy refers to the energy related to an object's movement. When an object is in motion, it possesses kinetic energy, which is a form of motion energy.
How to explain the energyThe matching will be:
motion energy = energy related to an object's movement
chemical energy = stored energy related to positions of atoms within molecules
thermal energy = energy of motion of particles in a substance
nuclear energy = energy released when a nucleus splits or combines
gravitational potential energy = energy related to height
sound energy = energy generated by vibration of a string
Chemical energy is stored energy that is related to the positions of atoms within molecules. It is the energy that can be released or absorbed during a chemical reaction. When chemical bonds are formed or broken, energy is either released (exothermic reaction) or absorbed (endothermic reaction) in the process.
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DDT, once hailed as one of the greatest scientific developments of the modern world, began to fall out of use after 25-30 years of widespread application. Insect resistance contributed to its decline. Scientists were interested in how insects, specifically mosquito populations, were developing resistance after exposure. Many researchers suspected the GSTe2 gene to be involved with resistance based on gene mapping. In order to test their hypothesis, scientists isolated a population of mosquitoes and maintained them in a lab under constant conditions for four months. At the four month mark, the insects were exposed to low levels of DDT daily for an additional four months. At month eight, the population of mosquitoes was split in half and isolated in separate chambers. Half of the population continued to be exposed to low levels of DDT daily for the remainder of the experiment, while half of the mosquitoes were removed and kept in an environment with no DDT exposure for the remainder of the experiment.
DNA samples were taken from the population(s) at months: eight, sixteen, twenty, and twenty-four. The DNA samples were analyzed and tested for mutations to the GSTe2 gene. Vertical bars in the figure represent two standard errors of the mean (SEM). a) Propose a possible hypothesis the researchers were testing. b) Propose an explanation for the results seen after the populations were separated. c) Describe the change in genetic variation over time once the population is split in half. Justify your response based on the SEM. d) When DDT was being used widely, it took approximately 6-7 years before scientists began seeing resistance in mosquito populations. Propose one reason for why it took so long to see resistance in nature in comparison to how long it took to see resistance in this experiment.
Answers
The researchers were testing the hypothesis that the GSTe2 gene is involved in insect resistance to DDT.
The populations were separated suggest that the mosquitoes exposed to low levels of DDT for the full eight months developed a higher frequency of mutations in the GSTe2 gene compared to the mosquitoes that were not exposed to DDT during the last four months of the experiment.
The change in genetic variation over time once the population is split in half shows that the mosquitoes exposed to DDT had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed mosquitoes.
Natural populations of mosquitoes are subject to a variety of environmental factors, including competition, predation, and disease, which can influence the rate at which resistance develops.
DDT was widely used as an insecticide in the mid-20th century to control a variety of insect pests, including mosquitoes that transmit diseases such as malaria and yellow fever. However, over time, many insect populations, including mosquitoes, developed resistance to DDT, rendering it less effective as an insecticide.
The researchers in this experiment were interested in understanding the genetic basis of insect resistance to DDT. Specifically, they suspected that the GSTe2 gene played a role in this process, based on previous gene mapping studies. To test their hypothesis, they exposed a population of mosquitoes to low levels of DDT for four months, after which they split the population in half and continued to expose one group to DDT while keeping the other group in a DDT-free environment.
The results of the experiment showed that the group of mosquitoes exposed to DDT for the full eight months had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed group. This suggests that exposure to DDT may have selected for mosquitoes with mutations in the GSTe2 gene, which provided them with a selective advantage in the presence of the insecticide.
The changing genetic variation over time is evidenced in the graph by the widening of the vertical bars, which represent two standard errors of the mean. This indicates that as time progressed, the genetic variation in the DDT-exposed group increased, likely due to the selection pressure imposed by the insecticide.
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How do vasoconstriction and vasodilation contribute to the homeostasis of body temperature ?
Answers
a community is defined as a species in an area and the recycling of nutrients in the area. true or false
Answers
Answer:
I would say this is false
Explanation:
I think it's false because it says " a species in an area ", but a community is a group of different species that live and interact in a common location. The term refers to various species rather than just one.
Why there were no clear zones for using LB media with 1% olive oil for screening lipilytic bacteria
Answers
The reason for the clear zone may be that there is Insufficient lipolytic activity.
Why the clear zone?The absence of clear zones when using LB media with 1% olive oil for screening lipolytic bacteria could be due to Insufficient lipolytic activity.
Enzymes called lipases, which are produced by lipolytic bacteria, break down fats and oils. It's possible that the bacteria utilized in the experiment won't create lipases or have poor lipolytic activity, which would prevent them from efficiently hydrolyzing the olive oil in the media. There wouldn't be any observable clearing or lipid hydrolysis zones as a result.
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The pedigree below shows inheritance of an X-
linked trait in a family. Based on the inheritance
pattern, what is the genotype of the person in
generation III (third generation), letter b?
Generation
11
111
TOOOD
500
Answers
Pedigrees have multiple uses. One of them is getting to know an individual's genotype. In the e xposed example, the individual IIIb is X-Y.
What is a pedigree?
A Pedigree is the representation of a family's history. This graph is used to track a trait through different generations, and analyze the inheritance pattern of a particular gene and its expression.
It is a tool used to understand how genes are transmitted from the parental generation to the descendants, and what are the probabilities of inheriting them.
In sex linked inheritance, we need to remember that the gene coding for the trait is linked to the sex-chromosome (in this case, the X-chromosome).
In pedigrees, usually affected individuals or individual carring the trait are representes with solid black figures.
Individual IIIb is a black square, meaning it is an affected man. Its genotype is X-Y. The X-chromosome is carrying the recessive allele (-).
In the attached files you will find the pedigree with the genotype of each member of the family. Notice that individuals X+X represent either homozygous dominant or heterozygous females.
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Which type of biological population growth explains a seasonal swarm of locust?
A. Stable
B. Irruptive
C. Irregular
D. Predator and Prey
Answers
The type of biological population growth which explains a seasonal swarm of locust is referred to as Irruptive and is therefore denoted as option B.
What is Irruptive growth?
This type of growth which is characterized by the species of organisms having a sudden rapid growth or explosion which is followed by a sudden crash or die-back.
This is common in organisms who are prevalent in certain periods of the year such as the locust in the rainy season. They can be seen in large quantities and after a while their population is reduced again and then the cycle goes on.
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HELP PLEASE! Which of the following courses should a student take in order to become a hydrologist? Choose the two best answers.
statistics
life science
coding
physical science
philosophy
Answers
Answer:
The two best courses for a student aspiring to become a hydrologist would be:
Physical Science: This course would provide a solid foundation in understanding the principles of physics and chemistry, which are essential for studying the movement and behavior of water in hydrology.
Statistics: Statistics is crucial for analyzing and interpreting data in hydrology research. Hydrologists often deal with large datasets and need statistical skills to make accurate conclusions and predictions.
While the other courses may have some relevance or value in certain aspects of hydrology, they are not as directly applicable or fundamental as physical science and statistics.
Explanation:
Answer: Statistics and Physical Science.
Explanation:
Statistics: Statistics is a branch of mathematics that deals with collecting, analyzing, and interpreting data. Statistics is essential for hydrologists because they use data to monitor, model, and forecast water resources and environmental issues. For example, hydrologists may use statistics to estimate water availability, assess water quality, evaluate water management strategies, and identify trends and patterns in hydrological phenomena.Physical science: Physical science is a broad term that encompasses the natural sciences that study the physical aspects of nature, such as physics, chemistry, geology, meteorology, and oceanography. Physical science is important for hydrologists because they need to understand the physical processes that govern the movement, distribution, and properties of water in various forms and environments. For example, hydrologists may use physical science to study the hydrologic cycle, the interactions between water and earth materials, the effects of climate and weather on water resources, and the principles of fluid mechanics and hydrodynamics.Hope this helps, and have a great day! =)
At Love Canal in the 1970s, there was an environmental disaster. In response, the Superfund law was passed.
Why can we view Love Canal and the creation of the Superfund as a positive environmental event?
It provided money to businesses responsible for toxic waste sites to clean up their pollution
It helped boost the economy among those waste sites
It allowed the EPA to find toxic waste sites and force the responsible parties to clean up the sites.
It helped identify toxic waste site and move people away from them
Answers
Answer:
It allowed the EPA to find toxic waste sites and force the responsible parties to clean up the sites.
Explanation:
The Love Canal tragedy occurred in Niagara Falls and resulted one of the worst ground water pollutions in the United States.
A large ditch was used for dumping of urban wastes in the 1920s. In the 1940s the US army dumped wastes from World War 2 there.
Estimated 21,000 tonnes of harzardous wastes like carcinogens benzene and PCBs.
Health problems like miscarriages, chromosome damage and birth defects began occuring in the community.
The Superfund a government programme aimed at cleaning up the worst harzardous chemical waste sites was instituted.
Hundreds of such sites have been cleaned up.
Polluters contributes to the clean up efforts
Describe two ways the industrialized meat production system interacts with Earth’s hydrosphere.
Answers
Eutrophication and biomagnification have an adverse effect in earth's hydrosphere.
What is eutrophication?"Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus."What is biomagnification? "Biomagnification takes place as chemicals transfer from lower trophic levels to higher trophic levels within a food web, resulting in a higher concentration in higher trophic level."The meat industries would release many toxic chemicals and nutrients directly into river bodies affecting earth's hydrosphere.
Hence, eutrophication and biomagnification are two ways the industrialized meat production system interacts with Earth’s hydrosphere.
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Cells that perform a specific function in an organism __
A. preform all of the functions
B. are specialized
C. are all the same
D. can survive on their own
Answers
Help pls !!!!!!!! I’m very confused
Answers
Answer:
Mols enzymes are proteins
The catalyse metabolic
Which is an example of incomplete dominance?
A. A red flower and a yellow flower mating to produce an orange
flower.
B. A red flower and a yellow flower mating to produce a yellow
flower.
C. A red flower and a yellow flower mating to produce a red flower.
D. Two orange flowers mating to produce an orange flower.
Answers
Answer:
i think the answer is B
Explanation:
Answer:
B
Explanation:
Which of the following statements about feedback regulation of a metabolic pathway is correct?
A) The compound that regulates the pathway acts as a competitive inhibitor or a positive allosteric regulator.
B) The enzyme that is regulated by feedback inhibition is usually the last enzyme in the metabolic pathway.
C) The final product of a metabolic pathway is usually the compound that regulates the pathway.
D) The products of the pathway become the reactants for a different reaction, and thus products are unable to accumulate.
E) Accumulation of the product of the pathway increases further formation of that product.
Answers
Answer:
Correct answer is: B) The final product of a metabolic pathway is usually the compound that regulates the pathway.
Explanation:
Feedback regulation of a metabolic pathway is a mechanism by which the end product of a pathway inhibits an enzyme that catalyzes an early step in the pathway, thus preventing the overaccumulation of the product. This is an example of negative feedback, which maintains homeostasis and optimizes the efficiency of the pathway.
For example, in the synthesis of the amino acid isoleucine from threonine, the final product isoleucine binds to the allosteric site of the first enzyme in the pathway, threonine deaminase, and inhibits its activity. This reduces the rate of the pathway and prevents the excess production of isoleucine.
Explain the difference between scientific versus religious explanations and the methods the use to support their explanation
Answers
Answer:
The main difference between scientific and religious explanations is the way in which each approach seeks to explain the world. Scientific explanations rely on evidence and reason, while religious explanations rely on faith.
Scientific explanations are based on observation, experimentation, and evidence. Scientists use the scientific method to draw conclusions about how the world works. They use logic and evidence to support their theories and hypotheses.
Religious explanations are based on faith, belief, and tradition. They rely on the teachings of religious texts, such as the Bible, to explain the world and its workings. Religious explanations are not based on evidence or logic, but rather on belief and faith.
Both scientific and religious explanations can be used to explain the world, but the methods used to support each explanation are very different. Scientific explanations rely on evidence and logic, while religious explanations rely on faith and belief.
Explanation:
how strong is a monkies grip
Answers
Answer:
Using the monkey grip on clothing, the lapel in particular, the monkey grip is stronger and allows a greater lifting ability. But use of the thumb in the lapel during a throw risks trapping the thumb in the clothing and loss of control. Of course, the thumb is the weakest part of the grip.
Explanation:
4. Where is rough endoplasmic reticulum located?
A. Cytoplasm
B. Ribosomes
C. Nucleus
D. Cell wall
Answers
Answer: Nucleus (C)
Explanation:
Rough ER is found throughout the cell but the density is higher near the nucleus and the Golgi apparatus. Ribosomes on the rough endoplasmic reticulum are called 'membrane bound' and are responsible for the assembly of many proteins. This process is called translation.
PLSSS HELP!
What are three land-use practices that contribute to surface erosion by water?
Answers
removal of vegetation, production of paper, construction production, and agricultural production
Answer:
hi
Explanation:
IM A BIG DOG BIG BEAR NI- i cant say that...
Nasir is 12 years old. What outcome is MOST likely if his caregivers talk with him openly about sexuality?
He will soon come out as gay.
He will be less likely to contract an STI.
He will have sex by age 13.
He will marry by age 18.
Answers
He will be less likely to contract an STI.
Option B is the correct answer.
What is STI?STI stands for sexual transmitted infection. A sexually transmitted infection (sexually transmitted disease) is a serious condition that can develop after you have sex.
So if Nasir is 12 years old, and if his caregivers talk with him openly about sexuality, he will be well informed about dangers of premature sex and sexually transmitted disease.
Thus, he will be less likely to contract an STI.
The wrong choices in the given options are;
He will soon come out as gay.
He will have sex by age 13.
He will marry by age 18.
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