Which of the following is an example of a homologous trait?
A. the wings of bees and birds
B. the forearm of different animals
C. the DNA of land animals

A. the wings of bees and birds

Explanation:

A homologous trait is a trait that is similar morphologically and genetically to one another due to their shared ancestry. This means that the traits are formed from the same ancestors, hence, they are homologous or similar.

According to this question, the wings of bees and birds are homologous because they share the same ancestry.

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."

i am going to guess that it is co2.