The study of beak size in Darwin's finches provides what kind of
evidence for evolution:

biogeographical evidence

Explanation:

did it on ck-12

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."

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b