Genetics Vocabulary

An alternate form of a gene for a specific trait or gene product

• genotype

• allele

• gene

• phenotype

The observable characteristics or traits of an organism

• genotype

• phenotype

• dominant

• homozygous

A chart used to show all the ways genes from two parents can combine and be passed to offspring is a

• Pie chart

• Line graph

• Bar graph

• Punnett Square

A term that describes the allele that determines the phenotype of an individual when two different copies are present in the genotype

• dominant

• recessive

• homozygous

• probability

The basic unit of heredity that consists of a segment of DNA on a chromosome

• chromosome

• double helix

• homozygous

• gene

An organism that inherits two of the same alleles from its parents

• dominant

• phenotype

• heterozygous

• homozygous

A term that describes an allele that is not expressed when combined with a dominant form of the allele

• gene

• recessive

• homozygous

• phenotype

The likelihood or chance that a specific outcome will occur out of a total number of outcomes

• heredity

• probability

• percentage

• ratio

The genetic make-up of an organism; all the genes that an organism has

• genotype

• phenotype

• dominant

• recessive

The passing of genes from parents to offspring

• Punnett Square

• probability

• genetics

• heredity