Genetics Review

Different versions of a gene represented by a capital or lowercase letter. Ex: T or t

• Allele

• Genotype

• Phenotype

• Homozygous

Tags

NGSS.HS-LS3-1

The letters that represent the traits. Ex: TT, Tt, or tt

• Phenotype

• Genotype

• Heterozygous

• Allele

Tags

NGSS.HS-LS3-1

The physical results of the trait. Ex: Brown hair or blue eyes

• Genotype

• Phenotype

• Homozygous

• Heterozygous

Tags

NGSS.HS-LS3-1

Two alleles that are the same. Ex: TT or tt

• Dominant

• Recessive

• Homozygous

• Heterozygous

Two alleles that are different.

Ex: Tt

• Homozygous

• Heterozygous

• Dominant

• Recessive

The allele that is expressed if different alleles are together. Represented by a capital letter. Ex: T

• Dominant

• Recessive

• Homozygous

• Genotype

The allele that is not expressed if the dominant allele is present. It is represented by a lowercase letter. These genes will only be expressed if both alleles are recessive. Ex: t

• Genotype

• Phenotype

• Dominant

• Recessive

Genes are located in _________.

DNA is located in _______.

Chromosomes are located in the ________ of a cell.