Unit 6 Heredity Genetics Vocab Review

Front

Trait

Back

A characteristic or property of an organism.

Front

Gene

Back

The basic unit of heredity in a living organism; a segment of DNA or RNA.

Front

Punnett Square

Back

A chart used to determine the possible genetic outcomes for offspring of a given cross.

Front

Genotype

Back

The genetic makeup of an organism, representing the alleles inherited from parents.

Front

Phenotype

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

Allele

Back

Different forms of a gene that can exist at a specific locus on a chromosome.

Front

Heredity

Back

The passing of traits from parents to offspring through genes.

Front

Dominant Allele

Back

An allele that expresses its phenotype even in the presence of a recessive allele.

Front

Recessive Allele

Back

An allele that only expresses its phenotype when two copies are present.

Front

Homozygous

Back

An organism that has two identical alleles for a particular gene.