D is the best answer
(I am just using my common sense)
Hope I helped :)
<span>The best response is that it reduces the effects of fragility and skin atrophy.</span>
<span>one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome</span>
Answer:
The wing of butterflies compared to that of birds and bats show <u><em>analogy</em></u>.
Explanation:
In the field of biology, analogy can be described as organisms which might have the same function but different biological origin. As we know, all of the flying animals have wings to fly. But all these organisms might not have a common origin. When comparing bats and birds to butterflies, we can see that butterflies have two pair of wings whereas, bats and birds have a single pair. Also, there are many other differences like the wing of a bird has feathers while butterflies do not have feathers.
