Which of the following options lists all the animals that make up the group "archosaurs" (does not leave any archosaurs out) and only includes animals that are archosaurs?

a. crocodilians, lizards, and dinosaurs

b. dinosaurs and crocodilians

c. birds and dinosaurs

d. birds, dinosaurs, and lizards

a

Explanation:

crocodilians, lizards and dinosaurs

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation: