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Yuki888 [10]
3 years ago
11

Natural selection leads organisms to become adapted to their environment over time. Using the concept of natural selection, expl

ain how the giraffe most likely came to have such a long neck.
Biology
1 answer:
elixir [45]3 years ago
5 0

Answer:

when the giraffes had short necks they were unable to reach the leaves on trees. This resulted in centuries-long growth of their neck. Their neck slowly over time started helping them as they started growing longer.

Explanation:

Hope it helps

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HELP ASAP !!!!!!!!!!
Jobisdone [24]

Answer:

the answer would be the first one which is sexual reproduction

8 0
3 years ago
One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
Naya [18.7K]

Answer:

A. The tails do not interact with the DNA

Explanation:

The acetylation refers to the transfer of the acetyl group from Acetyl-CoA to the N-terminal of the histone protein.

Lysine residues (positively charged amino acid) are present at the end of the N-terminal of the histone protein which is neutralized by the acetyl group.

This loses the compaction between the positively charged histone and the negatively charged DNA and the DNA becomes more relaxed. This relaxed state allows the transcription factors to easily bind the DNA and therefore the DNA becomes transcriptionally active.

Thus, Option-A is correct

4 0
3 years ago
When water is distilled, any solutes dissolved in the water are left behind. Is distilled water hypertonic or hypotonic compared
Illusion [34]

Answer:

Hypotonic

Explanation:

Tap water contains a lot of solutes and ions that are absent in distilled water. The solution that has more solutes (more dissolved solids) will be the <em>hypertonic</em> solution.

Here, distilled water has no solutes, making it <em>hypotonic</em>.

5 0
3 years ago
Jenny wants to determine if a new brand name washing detergent is better than her old detergent. She washes ten dirty t-shirts w
Alex787 [66]
She could use a control to compare her data to and make sure it is cleaner. Ex. Use the old detergent on ten shirts and then use the new detergent on another ten shirts. She would then compare the shirts she did each detergent on and come up with her conclusion.
8 0
3 years ago
Which statements correctly describe mutations in gametes and mutations in somatic cells?
sergeinik [125]

The mutation in the somatic cells is known as somatic mutations. As they do not take place in the cells, which give rise to gametes, thus, the mutation is not inherited to the next generation by the sexual means.  

On the other hand, the genetic mutations take place in the germline cells, that is, egg and sperm, because of this the mutations possesses the tendency to get passed on from one generation to another.  

Thus, mutations are only passed on to offspring when they take place in germ cell DNA. The other kind of cells, the somatic cells refers to the rest of the cells in the body and mutations, which takes place in these cells do not get inherited further to the offspring.  

Hence, the correct statements are mutations to gametes can be passed on to an organism's offspring and mutations to somatic cells are only present in the type of cell in which the mutation occurred.


3 0
3 years ago
Read 2 more answers
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