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genetics

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heredity
the passing of traits from parents to offspring
genetics
The scientific study of heredity
trait
specific characteristic that varies from one individual to another
allele
one of a number of different forms of a gene
purebred
the offspring of many generations that have the same traits
hybrid
offspring of crosses between parents with different traits
dominant
trait that will show up in an organism's phenotype if gene is present
recessive
The inherited characteristic often masked by the dominant characteristic and not seen in an organism.
homozygous
having two identical alleles for a trait
genotype
genetic makeup of an organism
heterzygous
an organism in which two alleles for a particular trait are not identical
phenotype
physical characteristics of an organism
punnett square
a chart that shows all the possible combinations of alleles that can result from a genetic cross
sex linked gene
gene located on the X or Y chromosome
multiple allele
presence of more than two alleles for a genetic trait
pedigree
a diagram that shows the occurrence of a genetic trait in several generations of a family
mutation
change in a DNA sequence that affects genetic information