Negative Exponents- All of the following expressions are equal except _____.
1 answer:
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Answer: 0.25 or 25%
Step-by-step explanation:Women have two chromosomes XX and men have two also XY.
From the question, it can be seen that colorblindness is an X-linked recessive condition.
Let the X-linked recessive gene be specified as and the dominant gene which is not colorblind linked as
.
The question says the woman has a father who is colourblind which means her father possesses the X-linked recessive gene which means he has chromosomes
and therefore must have given his daughter the recessive gene
For her husband who has normal vision his chromosomes will be .
So, the probability that their son will be colourblind will be;
Chromosomes Y
.
.
.
Therefore, the probability that their son will be color blind = ¼ or 0.25 or 25%
