A recessive allele will influence the expression of a trait only when it
a. is paired with another recessive allele.
b. forms a heterozygous gene combination with another recessive allele.
c. forms a homozygous gene combination with a dominant allele.
d. is paired with a dominant but weak allele.
e. is contributed by the male parent.
Answer: a. is paired with another recessive allele.
You might also like to view...
The primary means by which the postsynaptic action of acetylcholine is terminated is via
A) enzymatic destruction by acetylcholinesterase. B) reuptake of acetylcholine into the presynaptic terminal. C) reuptake of choline into the presynaptic terminal. D) diffusion away from the synapse. E) reduced synthesis of choline.
Monoamines are divided into two groups:
A) amino acids and peptides. B) peptides and proteins. C) catecholamines and indolamines. D) peptides and polypeptides. E) catecholamines and dopamine.