Biology pg.284
Write an explanation of dominant and recessive alleles that would be appropriate to to an eight grade science class. You can assume that the eighth grade students already know meanings of gene and allele.

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.