most of the early hominin fossils discovered in africa come from the eastern and southern parts of the continent. why is this? group of answer choices hominin groups lived in these areas and nowhere else. only these areas were conducive to sustaining life. these areas provided better preservation. many villagers in these areas gather fossils to sell.

Answer:

Explanation:

B. :) For example, camels have adapted to the scorching heat they survive in. Adaptations help a species live. :D If I helped please mark brainliest!

Adaptations affect a species by making the species more likely to survive. Thus, the correct option is B.

Species may be defined as a cluster of organisms that can reproduce with one another in nature and produce fertile offspring.

Adaptations may be defined as the process through which an organism makes itself better to be suited to the natural environment.

It increases the chances of a particular species surviving and reproducing in a natural environment.

Therefore, adaptations affect a species by making the species more likely to survive. Thus, the correct option is B.

To learn more about Adaptations, refer to the link:

https://brainly.com/question/29594

#SPJ5

Answer:

The correct answer is - option C. Deep.

Explanation:

The river with a narrow river channel found in shallow depth rivers that show relatively faster water flows than the deeper river that are slow in the water flow. In the shallow rivers sediments found in suspended mode and transported to the sea or delta and deposited there.

In deeper rivers, the sediments found deposited in the rivers which is helpful for the fishes for their nutrients as they feed on these sediments.

Thus, the correct answer is- option (C).

Answer:

C

Explanation:

Edge 2020

Answer:

A mutation

Explanation:

Single cell transcriptomics has revealed the presence of a population of dormant neural stem cells that can be activated to become active stem cells under certain conditions. This finding provides valuable insights into the regenerative capacity of the nervous system.

Single cell transcriptomics is a powerful technique that allows us to analyze gene expression in individual cells. In the context of neural stem cells, single cell transcriptomics has revealed the presence of a population of dormant neural stem cells. These cells are in a quiescent state and do not actively divide or differentiate.

However, under certain conditions, such as injury or tissue regeneration, these dormant neural stem cells can become activated. When activated, they have the potential to proliferate and differentiate into various types of cells in the nervous system.

For example, in response to a brain injury, these dormant neural stem cells can be activated to generate new neurons, astrocytes, or oligodendrocytes to aid in the repair process.

This discovery has significant implications for understanding the regenerative potential of the nervous system. By studying the gene expression patterns of these dormant neural stem cells, researchers can identify key factors that regulate their activation and differentiation.

Complete question is as follows -

What does the statement single cell transcriptomics reveals a population of dormant neural stem cells that become activated cell stem cell mean?

Learn more about stem cells -

brainly.com/question/18243320

#SPJ11

Answer:

Potential and kinetic energy is in humans. For example, when I am running, I am using kinetic energy. However, when I am sitting and eating some food, then I am reserving some energy and my energy is at rest which is an example of potential energy.

Explanation:

Answer:

The answer is: Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.

Explanation:

The other answers talk about how 1) Science should be bias or opinion based 2) Scientists only take each other's word and 3) Science never changes. All of these are false. Science does sometimes change, it should not be bias or opinion-based, and scientists do not always take each other's words.  

Answer:

Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.

Explanation:

There are three possible reading frames in a cellular environment.

A cell’s microenvironment includes the extracellular matrix; similar or dissimilar cells that surround another cell; different cytokines, hormones, and reactive species; local physical properties of a cell; the mechanical forces that are produced by the movement of molecular motors or fluids inside a cell.

A reading frame is a way of dividing a nucleotide sequence into consecutive triplets (codons) for translation into a polypeptide chain. In the laboratory setting, translation can be initiated anywhere along the molecule, so there are six possible reading frames. In a cellular environment, translation usually starts at the start codon (AUG) and continues until a stop codon is reached.

For such more questions Cellular environment

https://brainly.com/question/5524941

#SPJ4

Solution:

Genetic engineering has helped to propose the use of new drugs, proteins, or the use of DNA to control and correct cellular defects, as well as activate the immune response to eliminate the tumor cell.

On the other hand, genetic engineering is used to generate new vaccines, such as recombinant vaccines.

Finally, genetic engineering is used to generate transgenic organisms or transgenic products.

So, we can conclude that the correct answer is:

New Vaccines

Cancer drugs

Seedless grapes

Answer:

I would think the answer would most likely be 2.

Explanation:

Brianliest please :)

Therefore, in this case, PCR is being used to amplify the target DNA sequence, including the possible presence of a specific mutant gene. The process described, involving a primer and a heat-stable DNA polymerase, is polymerase chain reaction (PCR).

PCR is a molecular biology technique that is commonly used to amplify specific DNA sequences, including detection of genetic mutations. It involves the use of a pair of primers, short DNA sequences that are complementary to the ends of the target DNA sequence, and a heat-stable DNA polymerase, which can synthesize new DNA strands from the primers even at high temperatures.

During PCR, the DNA sample is first denatured by heating to separate the two strands of DNA. The temperature is then lowered to allow the primers to anneal to the complementary sequences on each strand. The heat-stable DNA polymerase then extends the primers, synthesizing new DNA strands in the 5' to 3' direction.

By repeating this process for multiple cycles, the amount of DNA amplifies exponentially, resulting in millions or billions of copies of the target DNA sequence. The amplified DNA can then be detected and analyzed by various methods, such as gel electrophoresis or sequencing.

To know more about mutant gene,

https://brainly.com/question/31420046

#SPJ11

Blood moves slower in capillaries compared to arterioles because precapillary sphincters close, shunting blood into capillaries. Therefore the correct option is option C.

Precapillary sphincters are ring-shaped muscles that are found near the arteriole-capillary junction. In order to control blood flow into capillaries, they can constrict or relax.

Blood is forced into capillaries when precapillary sphincters contract, allowing for the exchange of waste products, nutrients, and oxygen between the blood and tissues.

As a result, capillaries' blood flow slows down, which facilitates a more effective interchange of molecules between the blood and tissues.

Contrarily, arteryoles are tiny blood channels that transfer blood from arteries to capillaries. Therefore the correct option is option C.

For such more question on capillaries:

https://brainly.com/question/83042

#SPJ11

Based on the process of DNA replication, the result of the first round of replication will produce two daughter strands from a parent strand and four daughter strands in the second round of replication.

DNA replication is the process by which cells make an exact copy of their DNA before cell division. This ensures that the daughter cells receive the same genetic information as the parent cell.

Replication occurs in three major steps:

Learn more about DNA replication at:
https://brainly.com/question/21265857

#SPJ1

Erwin Chargaff was the first to observe that every DNA molecule had about the same amounts of adenine, thymine, guanine, and cytosine. Thymine makes up 29.4 percent of the human genome.

The information molecule is DNA. It holds instructions for building other big molecules, called proteins. These instructions are dispersed throughout 46 lengthy structures called chromosomes that are found within each of your cells.

DNA is dna polymerase. It is situated in the nucleus of the cell, which involves the combination. As a result, DNA may be thought as being one of the body's structural components.

To know more about DNA visit:

https://brainly.com/question/264225

#SPJ4

a) Variation: Darwin - Random mutations; Lamarck - Acquired traits.

b) Individual Variation: Darwin - Natural variation; Lamarck - Acquired traits.

c) Change and Evolution: Darwin - Populations change; Lamarck - Individuals change.

d) Evolutionary Progress: Darwin - Adaptation, not perfection; Lamarck - Progressive improvement.

a) Darwin's theory of natural selection explains that variation within a population arises from random mutations and genetic recombination. Lamarck's hypothesis, in contrast, suggests that variation comes from acquired traits influenced by the environment and an organism's needs.

b) According to Darwin, individuals within a population exhibit natural variation, meaning they differ from each other in their traits. Lamarck's hypothesis implies that individuals are not inherently variable but can acquire and pass on acquired traits during their lifetime.

c) Darwin's theory states that individuals themselves do not change or evolve within their lifetime. Instead, populations change over time through natural selection, with individuals possessing different traits. Lamarck's hypothesis suggests that individuals can change and acquire new traits during their lifetime, which can then be inherited by their offspring.

d) Darwin's theory rejects the idea of evolutionary progress towards perfection. It emphasizes that evolution is driven by adaptation to the environment, with populations evolving in response to changing conditions. In contrast, Lamarck's hypothesis implies that evolution is progressive, with organisms becoming more complex and better adapted over time.

To learn more about Darwin follow the link:

https://brainly.com/question/12151623

#SPJ4

Answer:

In multicellular animals, mitosis is required to maintain a consistent number of chromosomes in all body cells because it produces diploid daughter cells with genetic makeup that is typically identical to that of the parent cell. Mitosos is responsible for the multicellular organisms' growth. As a cell grows, the ratio between the nucleus and cytoplasm is distributed. Therefore, restoring the nucleo-cytoplasamic ratio is crucial for cell division. Cell repair is a very important mitosis-related function. Plants grow continuously throughout their lives as a result of mitotic divisions in the meristametic tissues, the apical and lateral Meristems.

Explanation:

1. When an organism gets or loses chromosomes, but not a full set, it is said to be aneuploid.

2. The presence of entire haploid sets of chromosomes is referred to as euploidy.

3. A monosomy is a diploid genome that has lost one of its chromosomes.

4. Trisomy is the addition of one chromosome to a genome that is normally diploid.

5. Humans with Patau syndrome have a trisomy of chromosome 13.

6. In humans, chromosome 18 trisomy causes Edwards syndrome.

7. The insertion of one or more additional sets of chromosomes that are identical to the typical haploid complement of the same species is known as autopolyploidy.

8. Allopolyploidy is a kind of polyploidy in which the chromosomes are the result of the hybridization of two distinct

11. The centromere is one of the breakpoints for the inversion known as pericentric inversion.

12. A paracentric inversion is one that does not have breakpoints at the centromere.

To know more about chromosome visit:

https://brainly.com/question/30077641

#SPJ4

Answer:

fracture and 206

Explanation:

:D

uwu hai mom

Answer:

A Biotic factors are the living parts of an ecosystem.

The abiotic factors in an ecosystem include all the nonliving elements of the ecosystem.

Hope this helps!

It is difficult to regulate liquid waste (effluents) leaving a factory, as there is no means of containment and remediation is difficult.

Industrial Effluents, on the other hand, will have their generation linked to the typology and the industrial process, in this way, all the water that was not lost through evaporation, infiltration and that ends up left over from the production process, that is, that is not incorporated into the final product, ends up becoming effluent.

The most used treatments for this type of waste are the aerobic and anaerobic process, which use biological agents, such as

to degrade the organic matter of the effluents.

With this information, we can conclude that Industrial waste is a wide variety of leftovers, waste or remains originating from manufacturing activities.

Learn more about effluents in brainly.com/question/9813795

#SPJ1

Answer:

Frontal

Explanation:

The ____frontal____ lobes are responsible for voluntary movement, thinking, personality, and purposeful actions.

Answer:

Water moves into a cell from outside because the pores in the cell membrane to equalise the concentration gradient.

The Ras protein cannot bind to Sev RTK, so there is no signaling pathway causing the cell to become a cone cell.

RAS proteins play an important role in normal development. Active RAS promotes cell growth, proliferation, and migration. RAS in normal cells receives and obeys signals to rapidly switch between active (GTP form) and inactive (GDP form) states.

Ras proteins are proto-oncogenes that are frequently mutated in cancers in humans. They are encoded by three genes that are widely expressed: HRAS, KRAS, and NRAS. These proteins are GTPases, which act as molecular switches, regulating pathways involved in cell proliferation and survival. KRAS is the most frequently mutated of the three Ras isoforms, accounting for 75% of Ras-mutant cancers in 19 of the 29 cancer types listed in Table 1.

To learn more about RAS protein, here

https://brainly.com/question/29698900

#SPJ4

The correct association is c) GTPase activity and GTP hydrolysis to GDP

The hydrolase enzymes known as GTPases bind to the nucleotide Guanosine triphosphate (GTP) and hydrolyse it to produce Guanosine diphosphate (GDP). The highly conserved P-loop "G domain," a protein region shared by numerous GTPases enzyme, is where GTP is bound and hydrolyzed. A cellular activity, such as signal transmission, cytoskeleton organisation, protein synthesis or translocation, or a membrane budding or fusing event, is promoted by the GTP-bound conformation, which is physiologically active. The GTPase switch is deactivated by GTP hydrolysis by transforming it to the inactive GDP-bound conformation.

To learn more about GTPase click here:

https://brainly.com/question/15719848

#SPJ4

It is crucial that there be enough items or events being sampled to provide a reliable estimate for the entire population.Choice A

To learn more about scientific investigation refer

https://brainly.com/question/28401295

#SPJ1

Answer:

mutation between cell occurs

Explanation:

The regions of skin supplied by a spinal nerve for somatic sensation are known as dermatomes.

A dermatome is an area of skin that is mainly supplied by a single spinal nerve. Each spinal nerve contains sensory fibers that transmit somatic sensation (touch, pressure, temperature, and pain) from a specific region of the skin to the spinal cord and ultimately to the brain. The pattern of dermatomes on the skin reflects the distribution of spinal nerves along the body.

Dermatomes are clinically important in the diagnosis and treatment of certain medical conditions. For example, if a patient experiences pain or numbness in a specific dermatome, it can help to localize the source of the problem to a specific spinal nerve or nerve root. This information can be useful in diagnosing conditions such as herniated discs, spinal stenosis, or other nerve-related disorders.

Understanding the dermatomal distribution of somatic sensation can also be important in planning surgical procedures, particularly those involving the spine or peripheral nerves.

In conclusion, dermatomes are regions of skin supplied by a single spinal nerve for somatic sensation. Understanding the pattern of dermatomes on the skin can be important in the diagnosis and treatment of certain medical conditions, as well as in surgical planning.

To know more about dermatomes ,visit:

https://brainly.com/question/31522372

#SPJ11

Animals breathe in oxygen and exhale carbon dioxide during the respiration process. In contrast, plants use this carbon dioxide gas to make food and release oxygen into the atmosphere through the process of photosynthesis.

What is photosynthesis?

Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilized during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.

What is aerobic cellular respiration?

Thus, we can conclude that animals and plants cooperate to exchange gases in the atmosphere.

To learn more about Photosynthesis click on the link

https://brainly.com/question/19160081

#SPJ1