Question

A BbGg x bbgg cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of the following best explains these results?

Answer 1

Answer:

The explanation for this result is that: The probability of expressing the black eye and the white skin together is 1/6 also of expressing the orange eyes with the green skin at the same time on the same organism is also 1/6.

Step-by-step explanation:

From the result, it can be inferred that the Black eye is controlled majorly by the dominant homozygous BB gene, the green skin by heterozygous Gg gene, the orange eye is controlled by the homozygous recessive bb gene, while the white skin by the recessive homozygous gg gene.

The genotypic ratio of the cross is: 1 BBGg, 1 Bbgg, 1 bbGg, 1 bbgg.

If 1 BbGg represents the 5 black eyes, green skin,

1 bbgg represents the 5 orange eyes, white skin,

1 Bbgg represents the 1 black eyes, white skin, and

1 bbGg represents the 1 orange eyes, green skin. It seems to have the same chance of expression, but this result showed us that when the black eye and the white skin are together, they tend to inhibit their expression, so they have little chance of 1 of 6.