Question

for a simple trait with one dominant and one recessive gene, a person will display the recessive trait
if they are heterozygous or homozygous for the recessive trait.
only if they are heterozygous.
only if they are homozygous for the recessive trait.
as long as they inherit one copy of the recessive trait.
question 22 (1 point)
what is not a function of a glial cell?
forming myelin sheath
production of neurotransmitters
mounting immune responses
holding neurons in place

Explanation:

For the first question, according to Mendelian genetics, a recessive trait is only expressed when an individual is homozygous (has two copies) for the recessive allele. In a heterozygous state (one dominant and one recessive allele), the dominant trait is expressed.
For the second question, glial cells (such as Schwann cells and oligodendrocytes) form the myelin sheath, astrocytes can help hold neurons in place, and microglia mount immune responses. Neurons, not glial cells, are primarily responsible for the production of neurotransmitters.

Answer:

For the first question: only if they are homozygous for the recessive trait.
For the second question: production of neurotransmitters.