In a cross between a black guinea pig and a brown guinea pig, all of the offspring are black and none of the offspring are brown. Which of the following is most likely true?ABlack fur color is dominant in guinea pigs.BBrown fur color is dominant in guinea pigs.CNeither fur color is dominant nor recessive in guinea pigs.DBlack fur color is recessive in guinea pigs.
Question
In a cross between a black guinea pig and a brown guinea pig, all of the offspring are black and none of the offspring are brown. Which of the following is most likely true?ABlack fur color is dominant in guinea pigs.BBrown fur color is dominant in guinea pigs.CNeither fur color is dominant nor recessive in guinea pigs.DBlack fur color is recessive in guinea pigs.
Solution
The most likely answer is A: Black fur color is dominant in guinea pigs.
Here's why:
In genetics, dominant traits are those that are expressed or seen when a mix of genes is present. Recessive traits are traits that are present but not seen in the offspring unless the dominant gene is not present.
In this case, when a black guinea pig (presumably with a dominant gene for black fur) is crossed with a brown guinea pig (presumably with a recessive gene for brown fur), all the offspring are black. This suggests that the black fur color is a dominant trait. If brown was the dominant color, then some of the offspring would have been brown.
Therefore, the most likely answer is that black fur color is dominant in guinea pigs.
Similar Questions
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