The scientific study of heredity.

When an egg and a sperm cell join and a new organism begins to form.

An organism that is the offspring of many generations that show the same form of a trait.

The different forms of a gene.

A chart that shows all the possible ways alleles can combine in a genetic cross.

A chart or a family tree that shows the presence or absence of a trait according to the relationships within a family across several generations.

Physical appearance or physical trait.

An organism's genetic makeup or allele.

An organism that has two identical alleles for a trait.

The manipulation of living organisms or their components to produce useful products.

The first generation of offspring produced by a set of parents.

The basic physical and functional unit of heredity made up of DNA.

Parent generation of which traits or genes are passed from parent to offspring.

A process involving two parents combining their genetic material to produce a new organism that differs from both parents.

A process involving only one parent and one offspring that are identical to the parent. A clone.

A process by which cells divide. The nucleus divides into two nuclei, and one copy of DNA is distributed into two identical daughter cells.

Molecules that contain nitrogen and form the rungs of the DNA double helix.

This cell division produces four haploid genetically different gametes.

The process in which an identical copy of a DNA strand is formed for a new cell.

When in the cell cycle is DNA replicated?