Answer:
= 
Explanation:
Given that the woman’s maternal grandfather is color-blind, then it is possible that the woman is a carrier of color-blind allele.
Then probability that the woman is a carrier of color-blind allele is =
So if a carrier woman cross with a normal man
Let say the gene of the carrier woman is: 
and the normal man = 
so if we have a cross between
and
; we have:



we can see the offspring to be :
=normal unaffected female
= normal unaffected male
= carrier female for color-blind
= carrier male for color-bind
Then probability that of inheriting defective allele =
= 
Let's not forget that the probability that the woman is a carrier of color-blind allele is =
∴ the probability that the son is colorblind = 
= 
Because cells are created for different task, such as cells in the muscle are different than cells located in the heart. This is called Differentiation.
<span>The appropriate response is species. It is frequently characterized as the biggest gathering of life forms in which two people can create ripe posterity, normally by sexual propagation. An animal varieties is given a name when a sort example is portrayed formally by a researcher, in a paper that allocates it a logical name.</span>