Genetics and Heredity

This is an alternative form of a gene

• Allele

• Gene

• DNA

• Protein

Tags

NGSS.HS-LS3-2

Dominant

• Always expressed if it is present

• Only expressed if there are two copies of this allele are present

• Shown as capital letters. ex. A

• Shown as lowercase letters. ex. a

Recessive

• Always expressed if it is present

• Only expressed if there are two copies of this allele are present

• Shown as capital letters. ex. A

• Shown as lowercase letters. ex. a

Homozygous

• Two of the same allele are inherited

• Two different alleles are inherited

• Ex. Hh

• Ex. HH or hh

Heterozygous

• Two of the same allele are inherited

• Two different alleles are inherited

• Ex. Hh

• Ex. HH or hh

Genotype

• Observable traits or characterisitics

• Genetic makeup of an individual

• Eye Color (ex. blue and brown)

• BB Bb bb

Tags

NGSS.HS-LS3-1

Phenotype

• Observable traits or characterisitics

• Genetic makeup of an individual

• Eye Color (ex. blue and brown)

• BB Bb bb

Tags

NGSS.HS-LS3-1