In rabbits, gray fur (G) is dominant to white fur (g) and black eyes (B) are dominant to red eyes (b).

Question

A rabbit that is heterozygous for both traits is crossed with a rabbit that is homozygous recessive for
both traits.
i. What are the genotypes of the two rabbits crossed? ___________ x ____________ ii. What are the different gametes that can be produced by each rabbit?
Parent 1: Parent 2: iii. What is the phenotypic ratio?

Answer 1

i. The genotypes of the two rabbits crossed are GgBb x ggbb
ii.
- Different gametes that can be produced by Parent 1 (GgBb):
- Gametes: GB, Gb, gB, gb

- Different gametes that can be produced by Parent 2 (ggbb):
- Gametes: gb

iii. The phenotypic ratio:
- 1 Gray fur, black eyes : 1 Gray fur, red eyes : 1 White fur, black eyes : 1 White fur, red eyes

Answer 2

Make the punnet square for it

Answer 3

Sure! Here is the Punnett square for the cross between a rabbit that is heterozygous for gray fur and black eyes (GgBb) and a rabbit that is homozygous recessive for white fur and red eyes (ggbb):

| g | g |
---------------------------------
G | Gg | Gg |
---------------------------------
g | gg | gg |
---------------------------------

| B | b |
---------------------------------
G | GB | Gb |
---------------------------------
g | gB | gb |
---------------------------------

Phenotypic ratio: 1 Gray fur, black eyes : 1 Gray fur, red eyes : 1 White fur, black eyes : 1 White fur, red eyes

Answer 4

It has to be a 4 by 4 square

Answer 5

Apologies for the confusion. Here is the correct 4x4 Punnett square for the cross between a rabbit that is heterozygous for gray fur and black eyes (GgBb) and a rabbit that is homozygous recessive for white fur and red eyes (ggbb):

| g | g |
------------------------------------------------------------
G | GG | Gg | GB | Gb |
------------------------------------------------------------
g | gG | gg | gB | gb |
------------------------------------------------------------

Phenotypic ratio:
- 1 (GG) Gray fur, black eyes
- 1 (Gg) Gray fur, black eyes
- 1 (GB) Gray fur, black eyes
- 1 (Gb) Gray fur, black eyes
- 1 (gG) Gray fur, red eyes
- 1 (gg) White fur, red eyes
- 1 (gB) Gray fur, red eyes
- 1 (gb) White fur, red eyes

Answer 6

4 by 4 grid punnet square

Answer 7

I apologize for the oversight. Here is the correct 4x4 Punnett square for the cross between a rabbit that is heterozygous for gray fur and black eyes (GgBb) and a rabbit that is homozygous recessive for white fur and red eyes (ggbb):

| g | g | g | g |
-------------------------------------------------------
G | GG | Gg | GB | Gb |
-------------------------------------------------------
g | gG | gg | gB | gb |
-------------------------------------------------------
B | GB | Gb | GB | Gb |
-------------------------------------------------------
b | gb | gb | gb | gb |
-------------------------------------------------------

Phenotypic ratio:
- 3 Gray fur, black eyes
- 3 Gray fur, red eyes
- 1 White fur, black eyes
- 1 White fur, red eyes

Answer 8

i. What are the genotypes of the two rabbits crossed? ___________ x ____________ ii. What are the different gametes that can be produced by each rabbit?
Parent 1: Parent 2: iii. What is the phenotypic ratio?

Answer 9

To recap:

i. The genotypes of the two rabbits crossed are GgBb x ggbb.

ii. The different gametes that can be produced by each rabbit are:

- Parent 1 (GgBb): Gametes - GB, Gb, gB, gb
- Parent 2 (ggbb): Gametes - gb, gb, gb, gb

iii. The phenotypic ratio will be as follows:

- 4 Gray fur, black eyes
- 4 Gray fur, red eyes