Final answer:
Phenotypes are the observable traits expressed by an organism and are determined by an individual's genotype. Gender identity, on the other hand, is not determined by biological sex.
Step-by-step explanation:
Phenotypes are the observable traits expressed by an organism, such as physical, behavioral, and biochemical characteristics. These traits are determined by an individual's genotype. An organism's genotype refers to its complete genetic makeup, including the combination of alleles it carries. Genes, which are segments of DNA, code for the assembly of specific proteins that contribute to an organism's phenotype.
Gender identity, on the other hand, is not determined by biological sex but rather by personal feelings and experiences. It is a deeply-held sense of being male, female, or a different gender that may or may not align with an individual's biological sex or assigned gender at birth.