2024 Genotype vs Phenotype

A genotype is the genetic makeup of an organism, represented by the alleles it possesses (e.g., AA, Aa, aa).

A phenotype is the physical appearance or observable traits of an organism, resulting from the interaction of its genotype with the environment.

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

A dominant allele is an allele that expresses its trait even when only one copy is present (e.g., E in Ee).

A recessive allele is an allele that expresses its trait only when two copies are present (e.g., e in ee).

Their genotype could be either EE (homozygous dominant) or Ee (heterozygous).

Their genotype must be ee (homozygous recessive).

The genotype for curly hair can be either HH (homozygous dominant) or Hh (heterozygous).

The genotype for straight hair must be hh (homozygous recessive).