What have you learned about heredity and genetics that could support?

What came first egg or chicken? and is tomato a vegetable or a fruit?

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks