Genetics

Heredity

Is the passing of physical characteristics from parents to offspring.

Trait

Is any characteristic of a living organism that can change between organisms like height, and eye color.

Genetics

The scientific study of heredity.

Fertilization

begins to form when egg and sperm join.

Purebred

is the offspring of many generations that have the same trait. For example, purebred short pea plants always come from short parent plants.

Gene

For the factors that control a trait.

Alleles

are the different forms of a gene the gene that controls stem height in

peas

Dominant

is one whose trait always shows up in the organism.

Recessive Allele

is hidden whenever the dominant allele is present. A trait controlled by a recessive allele will only show up if the organism does not have the domnant allele.

Hybrid

organism has two different alleles for a trait.