I would say the second option. Because colorblindness is regressive that means that there must not be a dominant genotype that replaces colorblindness. In most people there is a dominant genotype that replaces colorblindness which is simply being able to see color. So in me for example I might have a colorblindness genotype somewhere but since it is regressive (b) then it gets taken over but the color vision (B) remember that a dominant will always take over the regressive. the only way that someone can be color blind is if there are 2 regressive (b) genotypes that means there is no dominant genotype to take them over. Brown eyes is an Example of a dominant genotype that means that it will take over blue eyes (which is why there are most brown eyed people in the world)
I chose the second option because there is both X and Y and each one has either a B or a b the last option only had B.
But Remember that B > b
B trumps b
<span>Animals are generally more scared of humans than humans scared of them. Mice and other familiar animals run when they sense danger. The faster they run, the more danger they likely feel. Even humans have a natural instinct to flee when sensing danger.</span>
Answer:
A. DNA polymerase
Explanation:
DNA polymerases (I,II,III) proofread the DNA, which helps to catch errors. Errors can be fatal to expression, creating misformed proteins or unclear information, so this is necessary.
Fun facts - the coronavirus is a retrovirus, so it doesn't proofread. That makes it much harder to find a vaccine, because it can generate new strains by the very fact of not proofreading.
The answer is B. Hope this helps :)
