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genetics
the scientific study of heredity
heredity
the passing of traits from parents to offspring
trait
A characteristic that an organism can pass on to its offspring through its genes.
gene
A segment of DNA on a chromosome that codes for a specific trait
allele
An alternative form (different version) of a gene.
dominant
An allele that covers over, or dominates, another form of that trait.
recessive
An allele that is masked when a dominant allele is present
homozygous
two identical alleles for a trait
heterozygous
two different alleles for a trait
genotype
An organism's genetic makeup, or allele combinations, given in letters.
phenotype
An organism's physical appearance, or visible traits.
Punnett Square
A chart that shows all the possible combinations of alleles that can result from a genetic cross
