In humans, red hair is recessive and brown hair is dominant. If a red-haired woman marries a male with brown hair their first child is red-haired, determine:
a) If total is 7 descendants, which is the probability that 5 are redheads and 2 are brown?
b) ... that the first 4 descendants are brown and the 3 las ones are redheads ?
c) ...that all are women?

Question

In humans, red hair is recessive and brown hair is dominant. If a red-haired woman marries a male with brown hair their first child is red-haired, determine: 
a) If total is 7 descendants, which is the probability that 5 are redheads and 2 are brown? 
b)  ... that the first 4 descendants are brown and the 3 las ones are redheads ? 
c) ...that all are women?

koikkara · Answer

$\color{darkgreen}{\huge\Welcome~to~Open~Study!!~/}$ @NaviAn

navian · Answer

well thank you ^^

abhisar · Answer

by 7 descendants, do u mean 7 generations ?

abhisar · Answer

or 7 offsprings of the same generation ?

navian · Answer

I mean 7 children

abhisar · Answer

ohkay, there will be 50% chance for each children to have a red or brown hair