Question

1. The reading stated that the “pelvic fins are homologous to the hind limbs of terrestrial tetrapod’s posterior while it’s pectoral fins are homologous to the forelimbs”. Explain what this means and why this is important to the study of comparative anatomy.

Answer 1

Answer:

hope this helps

Explanation:

homologous-same structure, different function

analogous-different structure, same function

The pelvic fins are used for swimming, and the hind limbs are used for walking/running. The bone structure of these two animals have are the same, but the function is different.

Comparative anatomy- embryology, development, fossil record, DNA comparisons, species distribution. These six are the main ways scientist have used to compare different species and the anatomy. Learning about what two different species have in common helps people understand how life on earth became how it is today. It also helps us understand mutations/survival of the fittest, and example of the Galapagos Islands show how mutations from one species changed them into new species that are made to survive on certain islands but not on other islands.