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Anika [276]
3 years ago
5

Frogs, birds, rabbits, and lizards all have different forelimbs, which makes sense when you consider their different lifestyles.

interestingly, all of their forelimbs share the same set of bones the ulna, the radius, and the humerus. these same bones are also seen in fossils of the extinct animal eusthenopteron, which demonstrates common ancestry among these four groups of animals. hence, these forelimbs are an example of:_______
A) similes.
B) homologies.
C) analogies.
D) homilies.
Biology
1 answer:
yarga [219]3 years ago
6 0

Answer:

B) homologies

Explanation:

Got it off quizlet

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The repeating subunits of DNA are ribonucleotides whereas in RNA they are deoxyribonucleotides.

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Ribonucleotides are repeating subunit of RNA while the deoxy-ribonucleotides are repeating subunits of DNA. That why RNA full form represent the ribonucleic acid and DNA represent deoxyribonucleic acid.

Actually the word "deoxy" means one oxygen is removed or less in DNA. The DNA  lacks the one oxygen atom of hydroxyl group at carbon number two of ribose sugar. While RNA have the hydroxyl group at carbon number two of hydrogen atom.

The removal of one hydrogen atom in DNA make it more stable than RNA because DNA is made specifically to store genetic information and needed to be strong. The oxygen atom in RNA makes it vulnerable for attack by other biological molecules.

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