Solve this sex-linked traits practice problem

We know that hemophilia is a recessive trait, and the only way to express a recessive trait is to have a homozygous mixture. So, the genotypes probably look like this:

BB = normal blood clotting
Bb = carrier for hemophilia
bb = hemophiliac

Because the mother does NOT have hemophilia, we will be using BB x Bb to find out the alleles of their children. Because this is sex-linked traits practice, our alleles will be the following.

normal = X^BY
(uppercase B represents no hemophilia)

X^BX^b

Let’s cross them and see what we get!

X^B Y

X^B | X^BX^B X^BY

X^b | X^BX^b X^bY

As you can see, 0/4 of the females (represented by XX) will have hemophilia. Again, it is only present when there are two recessive alleles and none of them satisfy that.

2/4 of the females will be carriers (X^BX^b).

As for the boys, 1/4 will have normal clotting and 1/4 will have hemophilia. None of the males will simply be carriers.

I hope I helped!
Feel free to ask me for more assistance (if needed); I’ll gladly help! :)

The awnser is b i believe

Essential for a scientist to do for credibility

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.