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arlik [135]
2 years ago
11

Why is the idea of common descent only a conclusion?

Biology
1 answer:
Mamont248 [21]2 years ago
5 0

Answer: It's not observable, but is determined based on a large amount of

related evidence.

Explanation:

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Why is carbon important
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All plants for the most part take in Co2 so that they can produce oxygen,
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It is basically one of the main components of our every day life on Earth.

I really hope this helps you a lot.
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3 years ago
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12. Which of these organisms undergoes the most dramatic changes as it grows
schepotkina [342]

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C. Caterpillar

Explanation:

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A diploid cell turns into 4 haploid cells with no duplicated chromosomes. What did the cell go through?
Aliun [14]

Answer:

B. meiosis

Explanation:

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All nutrients in biological systems are _________
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3 years ago
Classify each description as true of introns only, exons only, or both.A-present in eukaryotic genomesB-generally absent from ba
maxonik [38]

The right answers are:

A-present in eukaryotic genomes ==> Both exons and introns

B-generally absent from bacterial genomes ==> Introns

C-part of the final mRNA strand ==> Exons

D-code for an amino acid sequence ==> Exons

E-removed from initial mRNA strand prior to translation ==> Introns

F-present in the DNA used as the template for transcription ==> Both exons and introns

In the genes of eukaryotic organisms, the exons are the segments of an RNA precursor that are conserved in the RNA after splicing and that are found in mature RNA in the cytoplasm. The segments of the RNA precursor that are removed during splicing are called in opposition to introns. Exons are mainly found in messenger RNAs (mRNAs) encoding proteins. Some mRNAs may sometimes undergo an alternative splicing process in which one or more exons may be excised or some introns preserved in rare cases.

6 0
3 years ago
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