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Dominant:
An allele that shows its trait even if there is only one copy (like B in Bb).
Recessive:
An allele that only shows its trait if there are two copies (like bb).
F2 generation:
The second generation of offspring, coming from a cross between two F1 individuals.
Linkage:
When genes are located close together on the same chromosome, so they are often inherited together.
Probability:
The likelihood or chance that a particular genetic outcome will happen.
Chromosome theory of inheritance:
The idea that genes are located on chromosomes, and that chromosomes are what get passed from parents to offspring.
Incomplete dominance:
When neither allele is completely dominant, and the result is a blend.
Codominance:
When both alleles are shown equally in the phenotype.