To produce a viable (able to survive) zygote, human gametes must be diploid.

Consider the karyotype below. Is this what we expect a typical human karyotype to look like? Why or why not?

Only two alleles for a gene can exist at one time.

If a man has a Y-linked condition, 25% of his daughters will inherit the condition.

Only two alleles for a gene can exist at one time.

Genes found on the same chromosome tend to be inherited together.

List 3 reasons I gave in lecture (or in my recorded lecture videos) why humans are not good subjects for genetics research.

A scientist is curious about the inheritance of fur color and tail length in mice. She suspects that the genes that affect these traits are located on the same chromosome but wants to formally test this hypothesis. In order to do so, she bred two mice: one mouse has white fur and a long tail while the other mouse has black fur and a stubby tail. In one year, they produced 43 offspring. 20 offspring were white with long tails. 13 offspring were black with stubby tails. 7 offspring were white with stubby tails. 3 offspring were black with long tails. What is the recombination frequency of these genes? Is the scientist’s hypothesis supported or rejected? Why?

A scientist is curious about the inheritance of fur color and tail length in mice. She suspects that the genes that affect these traits are located on the same chromosome but wants to formally test this hypothesis. In order to do so, she bred two mice: one mouse has white fur and a long tail while the other mouse has black fur and a stubby tail. In one year, they produced 43 offspring. 20 offspring were white with long tails. 13 offspring were black with stubby tails. 7 offspring were white with stubby tails. 3 offspring were black with long tails. What is the recombination frequency of these genes? Is the scientist’s hypothesis supported or rejected? Why?

Match the stage of the cell cycle to the number corresponding to the stage in the image below.