What are the characteristics and non-characteristics of density

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.

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna. (60 points to the person who answers)