A reproductive process that involves only one parent and produces offspring that are genetically identical to the parent.

The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell.

A specific characteristic that an organism can pass to its offspring through its genes.

A sequence of DNA that determines a trait and is passed from parent to offspring

The process by which an offspring receives genes from its parents.

A different form of a gene.

A fertilized egg, produced by the joining of a sperm and an egg.

The transfer of pollen from male reproductive structures to female reproductive structures in plants.

The reproductive structures of gymnosperms.

A plant structure in seed plants that produces the female gametophyte; contains an egg cell.

The ripened ovary and other structures of an angiosperm that enclose one or more seeds.

The sprouting of the embryo out of a seed; occurs when the embryo resumes its growth following dormancy.

The way an organism reacts to changes in its internal conditions or external environment.

A response to a stimulus that is inborn.

A chemical released by one animal that affects the behavior of another animal of the same species.

Behavior patterns related to how animals mate.

The regular, seasonal journey of an animal from one place to another and back again.