Answer:
Pp or PP
Explanation:
Being heterozygous mean you have one recessive gene(a), one dominate (A). Homozygous dominant means you have only dominate(AA). if you use a Punnett square, it would look like this:
P P
P PP PP
p Pp Pp
This shows only Pp, and PP are the possible genotypes.
In the nervous system a synapse is a structure that permits a neuron or nerve cell to pass an electrical or chemical signal to another neuron or to the target effector cell
If someone is carrier...it means it is heterozygous !
and more accurately...it is heterozygous recessive !