I would say the answer is either B or D but i pick B
Answer:
I-3, II-2, III-2 are all definitely carriers
It is possible find the genotype of individual II-1 because the he inherited his father's y which does not carry the trait (because only x chromosomes have the trait) and his mother's x chromosome, but the mother is not a carrier.
energy carried by electromagnetic wave is proportional to the frequency of the wave
From the mother through the placenta
It is not easily recognizable