What is the number of chromosomes in the gamete cells of a housefly?

Which one of the following is a genetically transmitted character?

Select the incorrect statement:

$Statement A$: For a particular character in an individual,each gamete gets only one allele.
$Statement B$: Chromatids of a chromosome split (separate) and move towards opposite poles during anaphase of mitosis.

Haemolytic jaundice is caused due to a dominant gene but only $10\%$ of the people who carry the gene actually develop the disease. $A$ heterozygous man marries a homozygous normal woman; what proportion of the children would be expected to develop the haemolytic disease?

$A$ human male is heterozygous for autosomal genes $A, B$, and $G$, and also for the hemophilic gene $h$. What is the probability of his sperm being $abgh$?