A) no. the man can’t be a carrier
b) his father
c) no. the colorblindness has to show up on both X and Y chromosomes to be colorblind. So if the mother is not colorblind nor a carrier, then most likely it won’t happen since it’s a recessive gene.
The probable genotype of the IV-3 with the perspective of autosomal inheritance will be A because he does not have condition A. Therefore both parents must be in condition A.
The probable genotype of IV-3 with the perspective of set=linked inheritance will be BbY this is because he has B condition. Therefore the mothers' genotype must be XBXb and the father's genotype must be XBY.
The probability of IV-4 having condition A is 1/36
B organelles
Like the mitochondria
