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Lunna [17]
3 years ago
15

The ONLY way a new allele can enter a population is

Biology
1 answer:
Ipatiy [6.2K]3 years ago
3 0

Answer:

D. Mutations

Explanation:

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What is a prokaryotic cell? Help please
Kitty [74]

Answer:

A cell whose genetic material isn't found in a membrane bound nucleus.

Explanation:

5 0
3 years ago
Which is composed of amino acids and determines all the structures and functions of organisms?
Mice21 [21]

Answer:

protein

Explanation:

7 0
3 years ago
How might an individual's own cells lead to false verdicts of guilt.
Gre4nikov [31]

Answer:

Through a circumstance known as "secondary transfer DNA", or "Touch DNA".

Explanation:

Most times when a crime is committed, DNA samples are obtained from surfaces in the scene where the crime was committed. There is a very huge possibility of picking up the DNA of someone who was never at the scene of the crime and this is a result of a condition known as Touch DNA.

Because we touch several objects which can be moved to different locations and touch people who are also always mobile, our DNA cells can find their ways to a crime scene where we had never physically been to. This can lead to false verdicts of guilt.

5 0
3 years ago
What is waters role in light reactions
lisov135 [29]

Answer:

water act as a reactant in light reaction.

Explanation:

Water undergo hydrolysis in presence of sunlight to form proton(H+) and hydroxyl ion(OH-) ion. The OH- ion liberates electron to reaction center of photosystem 1 thereby exciting the later .The excited photosystem then donates that extra electron to the primary electron acceptor and from the primary electron acceptor the electron moves through various electron carriers to generate ATP .

    Basically water act as reducing agent in photosynthesis process.

6 0
3 years ago
Which answer helps to explain why all living cells need ph buffers?
defon

Answer;

Amino acid side chains have many carboxyl and amino groups.

Explanation;

-A buffer solution is a solution that resists changes in pH when small quantities of an acid or an alkali are added to it. It is a chemical substance that helps maintain a relatively constant pH in a solution, even in the face of addition of acids or bases.

-Buffering is important in living systems as a means of maintaining a fairly constant internal environment, also known as homeostasis.Small molecules such as bicarbonate and phosphate provide buffering capacity as do other substances, such as hemoglobin and other proteins.

- Protein buffer systems depend upon proteins, as opposed to nonprotein molecules, to act as buffers and consume small amounts of acid or base. Since amino acids have the capability of reacting with both acid and base, they naturally act as buffers.

4 0
3 years ago
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