Two dominant alleles in mice both affect the appearance of the tail. Shorty (S) produces mice with short tails and hairy (H) produces mice with hairy tails. A testcross was carried out between a dihybrid male SsHh and tester female sshh that produced the following baby mice:
Phenotype Genotype Progeny
Short hairy tail SsHh 5 Long bald tail sshh 5 Short bald tail Sshh 15 Long hairy tail ssHh 15
Q) If the genes are unlinked, what would the expected number of short bald tail mice have been?
Q) Using the four phenotypes above, the Chi-square value from the hypothesis that the shorty and hairy genes sort independently is:
Q) What were the parental chromosomes in the dihybrid male?