What is this an example of? a child with no freckles has a mother who has freckles and is heterozygous and a father who has no freckles and is homozygous recessive.

a, homozygous dominant

b, heterozygous

c, homozygous recessive

d, heterozygous dominant

C. homozygous recessive

Explanation:

Freckles are a dominant characteristic, that is, they are expressed by people who have dominant and heterozygous homozygous alleles.

In the case of the child shown in the question above, the mother has freckles and is heterozygous, which means that she has recessive and dominant alleles (Aa) for this characteristic, while the father does not have freckles which means that he only has homozygous alleles. and recessive (aa) for this characteristic. If the child was born without freckles it means that she received a recessive allele from the mother and a recessive allele from the father (a + a), in this case, the child is homozygous recessive (aa).

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."

the correct answer is d