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balandron [24]
4 years ago
7

Which of these BEST describes our current understanding about how species evolve over time?

Biology
2 answers:
pantera1 [17]4 years ago
6 0
The answer is <span>D)- Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.</span>
Vitek1552 [10]4 years ago
5 0
<span>Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

</span>
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Hoochie [10]
It’s symmetrical if it’s equal on both sides?
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What happens to any matter that is not used by consumers in a food chain?
Ray Of Light [21]
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Take a few seeds from wire-grass. Wire-grass grows in many natural communities, it is eaten by rodents and birds, like Quail. Quail are eaten by snakes, who are eaten by hawks, bobcats, and raccoons.

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3 years ago
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3 years ago
The ____ ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the
maxonik [38]

Answer:

The purine ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the pyrimidine bases are synthesized separately and then coupled to ribose-5-phosphate via the C-N glycosidic bond.

Explanation:

In the de novo synthesis of nucleotides, their metabolic precursors such as aminoacids, ribose-5-phosphate, CO₂ and NH₃ are used as starting materials.

In purine  nucleotide synthesis, the ring structure is built up on ribose-5-phosphate of PRPP by addition of one or a few atoms one at a time starting with the amino group donated by glutamine until the first intermediate inosinate is synthesized.

In pyrimidine ring synthesis, orotate is first synthesized from carbamoyl phosphate and aspartate, and then is attached to ribose-5-phosphate of PRPP, before it is then converted to the common pyrimidine nucleotides starting from uridylate.

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3 years ago
Based on what you were told about the reproduction of the snails, write a question that could be researched
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Question: If they aren't hermaphrodites, can they still be male and female at the same time?


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