A man with straight hair and a woman with curly hair get together and have quadruplets!  All of them have wavy hair.  What does this tell you about the nature of the hair type alleles?

The wild-type allele of a gene is:

A man with type A blood is married to a woman with type B blood. You have no other information about them. What are the possible blood types of their children? 

In mice, short hair is dominant to long hair. If a short-haired individual is crossed with a long-haired individual and both long- and short-haired offspring result, one can conclude that:

There is a rare disease called ptosis which results in the affected individual being unable to completely open their eyes. (I’m not making this up!)  The condition is caused by an autosomal dominant allele P.  A woman who has ptosis marries a man with normal eyelids.  The woman’s father had ptosis, but her mother had normal eyelids.  Her father’s mother (her grandmother) had normal  eyelids.  What is the genotype of the woman’s paternal grandmother? [1] What must be the phenotype of her paternal grandfather? [2] What proportion of the women’s children is expected to have ptosis? [3]

Very few genes have been located on the Y chromosomes of humans. Y-linked genes include a gene called testis-specific protein Y. A male with this gene will  

In cocker spaniels, black color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). If the genes are unlinked, and the offspring of BBss and bbss individuals are mated with each other, what fraction of the F2 generation will be black and spotted?  

Two individuals of genotypes AAbb and aaBB, respectively, mate with one another and produce an F1 offspring. If the two loci (A and B) are very closely linked, what will be the genotypes of most of the gametes produced by the F1 individual? (hint: think about what the chromosomes look like in the parents and F1).

A man with straight hair and a woman with curly hair get together and have quadruplets!  All of them have wavy hair.  What does this tell you about the nature of the hair type alleles?

The structure at “H” is the _______ . “J” is pointing to the _______ . “C” is pointing to the _______ . “D” is pointing to the _______ knob. “B” is pointing to the _______ .The arrow at “G” is pointing to the _______ knob