Question

1) Which of the following explains why a bone in a bird's wing is homologous to a bone in a lizards leg? A) The bones in the two species provide for the same type of motion. B) The bones in the two species are both vestigial structures C) The two species were exposed to the same environmental pressures D) The two species have a common ancestor

Answer 1

Answer:

The correct option is D) The two species have a common ancestor

Explanation:

In evolutionary studies, homologous structures can be described as structures which are similar in organisms of different species because they had a common ancestor in the past. These structures may not perform the same function but are similar because they arose from a common ancestor. Hence, the bone in a bird's wing can be homologous to a bone in a lizard leg because they have a common ancestor in the past.

Answer 2

Answer: It is d.

Explanation: Um, it's D