Homozygous and Heterozygous Practice

Father has 1 dominant allele for brown eyes (B) and 1 recessive allele for blue eyes (b). Mother has two recessive alleles for blue eyes (b). a) Father is homozygous or heterozygous?

• Heterozygous

• Homozygous dominant

• Homozygous recessive

• Hemizygous

Tags

NGSS.HS-LS3-1

Father has 1 dominant allele for brown eyes (B) and 1 recessive allele for blue eyes (b). Mother has two recessive alleles for blue eyes (b). b) Father’s genotype is __________, and phenotype is ____________________

• Genotype: Bb, Phenotype: Brown eyes

• Genotype: BB, Phenotype: Blue eyes

• Genotype: bb, Phenotype: Brown eyes

• Genotype: bb, Phenotype: Blue eyes

Tags

NGSS.HS-LS3-1

Father has 1 dominant allele for brown eyes (B) and 1 recessive allele for blue eyes (b). Mother has two recessive alleles for blue eyes (b). c) Mother is homozygous or heterozygous?

• Homozygous

• Heterozygous

• Dominant

• Carrier

Tags

NGSS.HS-LS3-1

Father has 1 dominant allele for brown eyes (B) and 1 recessive allele for blue eyes (b). Mother has two recessive alleles for blue eyes (b). d) Mother’s genotype is __________, and phenotype is ____________________

• Genotype: bb, Phenotype: Blue eyes

• Genotype: Bb, Phenotype: Brown eyes

• Genotype: BB, Phenotype: Brown eyes

• Genotype: Bb, Phenotype: Blue eyes

Tags

NGSS.HS-LS3-1

Father has two dominant alleles for blue eyes (G) and mother has two recessive alleles for green eyes (g). a) Father is homozygous or heterozygous?

• Homozygous

• Heterozygous

• Hemizygous

• Polyzygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Father has two dominant alleles for blue eyes (G) and mother has two recessive alleles for green eyes. b) Father’s genotype is __________, and phenotype is ____________________

• Genotype is GG, phenotype is blue eyes

• Genotype is gg, phenotype is green eyes

• Genotype is Gg, phenotype is blue eyes

• Genotype is gg, phenotype is blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Father has two dominant alleles for blue eyes (G) and mother has two recessive alleles for green eyes (g). c) Mother is homozygous or heterozygous?

• Homozygous

• Heterozygous

• Dominant

• Carrier

Tags

NGSS.HS-LS3-1

Father has two dominant alleles for brown eyes (B). Mother has one dominant allele for brown eyes (B) and one recessive allele for blue eyes (b). a) Father is homozygous or heterozygous?

• Homozygous

• Heterozygous

• Recessive

• Carrier

Tags

NGSS.HS-LS3-1

Father has two dominant alleles for brown eyes (B). Mother has one dominant allele for brown eyes (B) and one recessive allele for blue eyes (b). c) Mother is homozygous or heterozygous?

• Heterozygous

• Homozygous dominant

• Homozygous recessive

• Hemizygous

Tags

NGSS.HS-LS3-1

Father and mother both have one dominant allele for blue eyes (B) and one recessive allele for green eyes (b). a) Father is homozygous or heterozygous?

• Heterozygous

• Homozygous dominant

• Homozygous recessive

• None of the above

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2