Determining Genotypes & Phenotypes for Dihybrid Cross

In horses, a straight mane (H) is dominant over a curly mane(h). Trotter horses (T) are dominant to pacer horses (t).

Determine the genotype of a horse with the phenotype: curly maned pacer horse

• HhTT

• hhTT

• hhtt

• HHtt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In horses, a straight mane (H) is dominant over a curly mane(h). Trotter horses (T) are dominant to pacer horses (t).

Determine the genotype of a horse with the phenotype: homozygous dominant for both traits

• HhTT

• HHTT

• hhtt

• HHtt

Tags

NGSS.HS-LS3-1

In horses, a straight mane (H) is dominant over a curly mane(h). Trotter horses (T) are dominant to pacer horses (t).

Determine the genotype of a horse with the phenotype: heterozygous for both traits

• HhTt

• HHTT

• hhtt

• HHtt

In pea plants, purple flowers (P) are dominant to white flower (p). Round seeds (R) are dominant to wrinkled seeds (r).

Determine the phenotype of a flower with the genotype: Pprr

• Purple flower with wrinkled seeds

• Purple flower with round seeds

• White flower with wrinkled seeds

• White flower with round seeds

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, purple flowers (P) are dominant to white flower (p). Round seeds (R) are dominant to wrinkled seeds (r).

Determine the phenotype of a flower with the genotype: ppRR

• Purple flower with wrinkled seeds

• Purple flower with round seeds

• White flower with wrinkled seeds

• White flower with round seeds

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, purple flowers (P) are dominant to white flower (p). Round seeds (R) are dominant to wrinkled seeds (r).

Determine the phenotype of a flower with the genotype: PpRr

• Purple flower with wrinkled seeds

• Purple flower with round seeds

• White flower with wrinkled seeds

• White flower with round seeds

Tags

NGSS.MS-LS3-2

In guinea pigs, short hair (H) is dominant to long hair (h). Also, black eyes (B) are dominant to red eyes (b).

Determine the genotype of a guinea pig with the phenotype: short hair with black eyes (select all possible genotypes)

• HHBb

• hhbb

• HhBB

• HHbb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In guinea pigs, short hair (H) is dominant to long hair (h). Also, black eyes (B) are dominant to red eyes (b).

Determine the genotype of a guinea pig with the phenotype: long hair with red eyes.

• HHBb

• hhbb

• hhBB

• HHbb

Tags

NGSS.HS-LS3-1

In guinea pigs, short hair (H) is dominant to long hair (h). Also, black eyes (B) are dominant to red eyes (b).

Determine the genotype of a guinea pig with the phenotype: short hair with red eyes (select all possible genotypes)

• HHbb

• Hhbb

• hhBB

• HHBb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In cocker spaniels, a black coat color (B) is dominant to brown coat color (b). Also, curly hair (C) is dominant to straight hair (c).

Determine the phenotype of a cocker spaniel with the genotype: BbCc

• heterozygous for coat color and hair texture

• homozygous black coat with straight hair

• heterozygous coat color with homozygous curly hair

• homozygous brown coat with homozygous curly hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2