Genetics

Recessive Allele

• _________ prevents the other gene from "showing-up"

• When both alleles are ________ a recessive trait occurs

• _________s are hidden when a dominant gene is present

Dominant Allele

• _________s prevent the other gene from "showing-up"

• When both alleles are ________ a recessive trait occurs

• _________s are hidden when a dominant gene is present

Tags

NGSS.HS-LS3-1

Recessive

• _________ prevents the other gene from "showing-up"

• When both alleles are ________ a recessive trait occurs

• _________s are hidden when a dominant gene is present

Tags

NGSS.HS-LS3-2

Homozygous

• Both alleles are the same

• One dominant allele and one recessive allele

• Purebred

• Hybrid

Allele

• A segment of DNA that codes for a trait

• Different forms of a gene

• A combination of alleles (Actual gene makeup)

• Physical appearance based on allele makeup

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous

• Both alleles are the same

• One dominant allele and one recessive allele

• Purebred

• Hybrid

genotype

• TT

• Red hair

• Tt

• Green eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Homozygous recessive

• TT

• tt

• Tt

• Dry skin

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous dominant

• TT

• tt

• Tt

• Dry skin

Tags

NGSS.HS-LS3-2

Homozygous dominant

• TT

• tt

• Tt

• Dry skin

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2