Question

a scientist claims that fish are more closely related to chickens than to sea urchins because, unlike sea urchins, the embryos of fish and chickens both have notochords and gill slits. which of the following types of evidence is the scientist’s claim based on? choose 1 answer: a embryological evidence b fossil evidence c molecular evidence

Explanation:

The scientist's claim is based on the characteristics of fish and chicken embryos (notochords, gill slits) and sea urchin embryos. Embryological evidence involves studying embryonic development to determine evolutionary relationships. Fossil evidence would involve fossils, and molecular evidence would involve DNA/proteins, neither of which are mentioned here. So the evidence is embryological.

Answer:

A. embryological evidence