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Charra [1.4K]
3 years ago
15

10. Vestigial structures

Biology
1 answer:
ICE Princess25 [194]3 years ago
8 0

Answer:

Are usually present, but are no longer functional.

Explanation:

Vestigial structures are "evolutionary remnants". They are anatomical features that were once important throughout the organism's evolution, but now have no function. However, they aren't harmful either, so there has been no selective pressure for them to be removed via evolution.

Good examples in humans are the tail bone, wisdom teeth, and the appendix.

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In the the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At anot
Irina18 [472]

Answer:

15

Explanation:

According to linkage theory, two genes present on the same chromosome tend to get inherited together. So the gametes produced are not equal in number and parental type offspring are observed more in number than the new recombinant types.

Here, normal wings, red eyes (420) and vestigial wings, purple eyes (430) are most in number hence they are the parental type offspring.

Vestigial wings, red eyes = 80 : recombinant

Normal wings, purple eyes = 70 : recombinant

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= [(80+70)/(420+80+70+430)]*100

= (150/1000)*100

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8 0
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