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notsponge [240]
3 years ago
15

2 points

Biology
1 answer:
rjkz [21]3 years ago
5 0

Answer:

Option B

Explanation:

The presence of these structures in this stage may be a prediction of a common ancestor as these structures are not gills because they do not develop into gills in chicks and humans but being so similar to gill structures in fish at this stage in their embryo suggests that chicks and humans share a common ancestor with fish.

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vovangra [49]

Answer:

Option-D, a segment of DNA

Explanation:

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The gene is present in the form of its alternative form called alleles which are located on the chromosomes at locus. The alleles represent the variants of the gene and therefore controls the two variety of a single trait.

Thus, Option-D is correct.

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irinina [24]
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Yakvenalex [24]

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Explanation:

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