The part of a neuron that contains the nucleus is the
cell body
dendrite
axon
glial

Cell body

Explanation:

All neurons are made up of three parts: an axon, a cell body and dendrites.

The body of the cell or also called soma is the part of the neuronal cell that contains the nucleus and also specialized organelles.

Dendrites receive and process signals from the axons of other cells. They are are like roots that branch out from the cell body.

An axon is a long structure which extends from the body of the cell. Some axons are covered by a layer of myelin that allows the fast transmission of information.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.