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Fed [463]
3 years ago
6

If a population of bacteria were all exactly the same, could the process of natural selection act on that population

Biology
1 answer:
stira [4]3 years ago
7 0

Answer:

No

Explanation:

Natural selection acts on existing genetic variation in a population. If there is a mutation that makes the bacteria more fit, then it is more likely to survive and divide to pass its mutation on to daughter cells. Eventually, this variation will become more common in the population. This is natural selection in action.

Examples of mutations that could make the bacteria more fit are if it has antibiotic resistance, the ability to use a new substance as a food source, or is more able to grow at a range of different temperatures.

If no variation exists, then there is no genetic reason one bacterium is fitter than other, so no natural selection will take place.

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Do you think the vacuum hose is an effective way to remove sea urchins? Why? Explain at least one way this technology can be imp
mamaluj [8]

Answer:

No, or at least not yet. there small and dont do much improvment. If they were much bigger and sucked better, including some touch-ups here and there, they would have a bigger effect on removing sea urchins.

Explanation:

4 0
2 years ago
You have identified two mutants with same phenotype.
algol13

Answer:

No, there are multiple ways in which different mutations in the same gene can cause the same phenotype

Explanation:

Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)

These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.

  • There could be a single base deletion in the first exon of the mRNA, changing the reading frame of the protein and messing up the entire sequence (a frame shift mutations)
  • The entire gene could be deleted
  • A single base could be substituted in an important site of the gene, for example, one which translates into a catalytic residue or binding site in the protein
  • There could be an inversion at the promoter region of the gene, such that a transcription factor can no longer bind to transcribe the gene.

There are countless other ways in which a mutation could have been caused. Therefore, just because we know the same gene is affected does not mean that we can assume the mutations are identical.

7 0
3 years ago
Why is mitosis important to your body
Hitman42 [59]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ Mitosis is important for our body because mitosis makes our bodies grow and develop. Without mitosis, we wouldn't grow and our cells wouldn't be repaired or replaced.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

8 0
3 years ago
Read 2 more answers
An intestinal hormone that stimulates the gallbladder to release bile is:.
USPshnik [31]

Answer:Cholecystokinin

Cholecystokinin stimulates the gallbladder to contract and release stored bile into the intestine.

Explanation:please give brainliest

5 0
3 years ago
The types types of cells that are shaped like roots are_cells
liubo4ka [24]
They are nerve cells
5 0
3 years ago
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