If a little boy inherits the
"A" allele from his mother
and the "a" allele from his
father, which type of the
following individuals is he?
A. a heterozygous individual
B. a homozygous dominant individual
C. a monozygous recessive individual
D. a homozygous recessive individual

A

Explanation:

In genetics, when you inherit 2 of the same alleles, it is called homozygous. When you inherit one dominant and one recessive, it is called heterozygous. A is correct.

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."