Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Determining Genotypes & Phenotypes for Dihybrid Cross

Total questions: 18

Worksheet time: 18mins

Name
Class
Date
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: curly maned pacer horse

a)

HhTT

b)

hhTT

c)

hhtt

d)

HHtt

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

a)

HhTT

b)

HHTT

c)

hhtt

d)

HHtt

3.

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

a)

HhTt

b)

HHTT

c)

hhtt

d)

HHtt

4.

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

a)

Purple flower with wrinkled seeds

b)

Purple flower with round seeds

c)

White flower with wrinkled seeds

d)

White flower with round seeds

5.

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

a)

Purple flower with wrinkled seeds

b)

Purple flower with round seeds

c)

White flower with wrinkled seeds

d)

White flower with round seeds

6.

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

a)

Purple flower with wrinkled seeds

b)

Purple flower with round seeds

c)

White flower with wrinkled seeds

d)

White flower with round seeds

7.

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)

a)

HHBb

b)

hhbb

c)

HhBB

d)

HHbb

8.

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.

a)

HHBb

b)

hhbb

c)

hhBB

d)

HHbb

9.

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)

a)

HHbb

b)

Hhbb

c)

hhBB

d)

HHBb

10.

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

a)

heterozygous for coat color and hair texture

b)

homozygous black coat with straight hair

c)

heterozygous coat color with homozygous curly hair

d)

homozygous brown coat with homozygous curly hair

11.

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

a)

heterozygous for coat color and hair texture

b)

homozygous black coat with straight hair

c)

heterozygous coat color with homozygous curly hair

d)

homozygous brown coat with straight hair

12.

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

a)

heterozygous for coat color and hair texture

b)

homozygous black coat with straight hair

c)

heterozygous coat color with homozygous curly hair

d)

homozygous brown coat with straight hair

13.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the genotype of a rabbit with the phenotype: hybrid for both traits

a)

GgBb

b)

GGBb

c)

Ggbb

d)

GgBB

14.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the genotype of a rabbit with the phenotype: purebred for grey fur with black eyes (select all possible genotypes)

a)

GgBb

b)

GGBb

c)

GGBB

d)

GgBB

15.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the genotype of a rabbit with the phenotype: hybrid for grey fur with purebred for red eyes

a)

Ggbb

b)

GGbb

c)

GGBB

d)

GgBb

16.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the phenotype of a rabbit with the genotype: GGBB

a)

purebred for both traits

b)

purebred grey fur with red eyes

c)

hybrid for both traits

d)

purebred white fur with black eyes

17.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the phenotype of a rabbit with the genotype: ggBB

a)

purebred for both traits

b)

purebred grey fur with red eyes

c)

hybrid for both traits

d)

purebred white fur with black eyes

18.

In rabbits, grey hair (G) is dominant to white hair (g). Also, black eyes (B) are dominant to red eyes (b).


Determine the phenotype of a rabbit with the genotype: GGbb

a)

purebred for both traits

b)

purebred grey fur with red eyes

c)

hybrid for both traits

d)

purebred white fur with black eyes