Ph0bolus

My instructor gave me some problems to help study for the quiz on Monday, but i have no idea how to go about solving them.. 1) In martians, Gene 1 is determining eye shape (A-star eyes; a- square eyes) and Gene 2 is coding for presence or absence of tail hairs (B-hairy tail; b-smooth tail). True- breed star eyed individual with smooth tail marries another true-breed square-eyed individual with hairy tail and all of their childred have star eyes and hairy tailes. If mendelian Genetics works on Mars, a) which allele of each gene is dominiant, and which is recessive? Would the dominant ones be A,B, and the recessive a,b b) What are the genotype of the parents? Would the mother be A/A b/b and the father a/a B/B c) What combinations of genes and in what proportions do you expect in the resulting gametes in parents? I don't know how to figure this one out. 2)Assume that D,E,F,G,H and I are genes on ifferent chromosomes. From the mating (parent A) DdeeFfGGHhIi * (parent B) DdEEFFGgHhii: a) What is probability that one of the offspring will have the genotype DdEeFFGghhIi? would this answer be 1/(2^7)? b) What is the probability that one of the offspring will be heterozygous for each allele? I'm lost on this one. c) How many different kinds of gametes can be produced by each parent? 128? 3)A dominant allele of a gene "A" causes yellow color in rats. The dominant allele of another independent gene, "R", produces black coat color. When 2 dominant genes occur together (A-R-), they produce grey coat color. Rats of the double recessive genotype are cream colored. a) What kind of gene interaction iss that? Would this be incomplete dominance? b)If a grey male and a yellow female mated and produced approx. 3/8 yellow, 3/8 grey, 1/8 cream, and 1/8 black, what were the genotypes of the parents? I tried the punnet squares, but keep getting confused with it. Any help would be greatly appreciated, Thanks in advance.