Genetics Key Terms

One of two more forms that a gene could take

• Allele

• Gene

• Hybrid

• Phenotype

The genetic makeup of an organism

• Allele

• Gene

• Genotype

• Phenotype

Tags

NGSS.HS-LS1-1

An allele that is always expressed when present; expressed as a capital letter

• DNA

• Dominant allele

• Phenotype

• Recessive allele

The physical appearance of an organism's traits

• Genotype

• Heredity

• Phenotype

• Trait

A segment of DNA that is passed down to the next generation, and codes for a specific trait

• Allele

• Gene

• Heredity

• Trait

Tags

NGSS.HS-LS3-1

An allele that is not expressed unless there are two of them

• Dominant allele

• Genotype

• Recessive allele

• Trait

A genotype with alleles that are different from each other: Bb

• Gene

• Homozygous

• Heterozygous

• Phenotype

A genotype with alleles that are the same: BB, bb

• Gene

• Homozygous

• Heterozygous

• Phenotype

The genotype AA is

• homozygous dominant,

• homozygous recessive

• heterozygous

The genotype Bb is

• homozygous dominant,

• homozygous recessive

• heterozygous