Genotype - An organism's genetic makeup, or allele combinations.
Heterozygote - an individual having two different alleles of a particular gene (Pp).
Homozygous - organism that has a pair of identical alleles for a gene (PP or pp)
Dominant - Describes an allele that covers over, or masks, another form of that allele.
Recessive - An allele in an organism that can be masked by the dominant form of that allele.
sex-linked traits - A gene carried on the X chromosome.
Punnett Square - diagram that can be used to predict the possible genotype and phenotype
combinations of a genetic cross
Probability - likelihood that a particular event will occur
Trait - A characteristic that an organism can pass on to its offspring through its genes.
Heredity - the transmission of traits from one generation to the next
Gene - A sequence of DNA that codes for a protein and thus determines a trait
Gregor Mendel - Augustinian monk whose experiments in breeding garden peas led to his eventual
recognition as founder of the science of genetics (1822-1884)
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