Question

a)
How are the studies of anatomical structures helpful for tracing evolutionary
relationships?
b) How could we determine that 'the birds are very closely related to reptiles'?​

Answer 1

Answer:

Homologous structures: Bat and bird wings are homologous structures, indicating that bats and birds share a common evolutionary past. Notice it is not simply a single bone, but rather a grouping of several bones arranged in a similar way.

Hope this will help you to clear your doubt!