Heredity, Reproduction, Natural Selection 7th Grade

sexual reproduction

A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents

asexual reproduction

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

natural selection

A process in which individuals that are best suited to their environment tend to survive and reproduce more than others that are not as well suited for that environment.

Variation

Any difference between individuals of the same species.

selective breeding

the process of selecting organisms with desired traits to reproduce in order to influence the traits of the next generation

Heredity

Passing of traits from parents to offspring

Chromosomes

Structures inside of the nucleus of a cell made of DNA molecules that contain the genes

Genes

a unit of DNA that controls the development of one or more traits

Allele

the different forms of a gene; could be dominant or recessive

Phenotype

An organism's physical appearance, or visible traits.

Genotype

genetic makeup of an organism

Trait

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