Which is true of genes found on chromosomes?

a. they are the site of protein manufacturing.

b. they cause mutations when they make substitutions or deletions to rna.

c. they cause mutations when they make substitutions or deletions to dna.

d. they determine the inherited traits of an organism.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.