To be consistent with the semi-conservative model, what would be the expected results for the Meselson and Stahl experiment after 4 generations?   Note: Generation zero has all heavy DNA, and all subsequent generations use light nitrogen to make new DNA strands.

A gene that codes an enzyme comes with two alleles: a wild-type allele and a dominant negative mutant allele.  Let’s suppose 1 mg of the wild-type enzyme has 100% enzymatic activity and 1 mg of the mutant enzyme has 0% activity.  If you mix together 1 mg of the wild-type enzyme and 1 mg of the mutant enzyme and measured the enzymatic activity, what result would you expect?

Which of the following diseases exhibits locus heterogeneity?

For a rare inherited disease, the theoretical concordance for a dominant disease among fraternal twins is

RNA primers are removed by (                                ) in eukaryotic cells, while RNA primers are removed by (                             ) in bacterial cells.

An inversion heterozygote has the following inverted chromosome.  What is the result if crossing over occurs between genes F and G on an inverted and a normal chromosome in this individual?  

Achondroplasia (a form of dwarfism) is caused by a dominant mutant allele that is lethal in the homozygous state.  A woman with achondroplasia plans to have children with a man with achondroplasia.  What is the expected outcome for her surviving children?

A woman with type A blood has a child with type O blood. What are ALL the possible blood types of the father?

By conducting testcrosses, researchers have found that the sweet pea plant has seven linkage groups.  How many chromosomes would you expect to find in leaf cells of sweet pea plant?

Two different genes are linked on the same chromosome.  An aaBB individual is crossed to an AAbb individual to produce AaBb offspring.  The AaBb offspring are then crossed to aabb individuals to produce an F2 generation.  What are the genotypes of the F2 recombinant offspring?