A woman is heterozygous for four gene pairs and homozygous for six gene pairs 

(a) How many different kinds of eggs can she form 

(b) If her husband had the same genetic constitution as she did, how many different kinds of genotypes are possible among their offspring 

(c) If Aa were one of the gene pairs for which both of these parents were heterozygous, what is the probability that their first child would also be heterozygous for the same gene pair 

(d) What is the probability that they would have?