In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross between a pea plant with wrinkled peas (genotype rr) and a plant of unknown genotype that has round peas. You end up with three plants, all which have round peas. From this data, can you tell if the round pea parent plant is homozygous dominant or heterozygous? If the round pea parent plant is heterozygous, what is the probability that a random sample of 3 progeny peas will all be round?

This is the study of how people, with the same beginning, will go on various paths and become different people. For example, a group will all start their adult lives at graduation but each individual will go on to have a different career.

List and briefly describe the three processes that lead to variation in offspring with the same parents.

Describe the process that results in the formation of a tetrad.

What are the genotypes of the individuals labeled 1, 2, and 3? 

Can a human male be a carrier of red-green color blindness?

Why would an individual with a mutation that prevented the formation of recombination nodules be considered less fit than other members of its species?

Histamine binds to the H1 G-protein-linked receptor to initiate the itchiness and airway constriction associated with an allergic response. If a mutation in the associated G-protein’s alpha subunit prevented the hydrolysis of GTP how would the allergic response change?

FtsZ proteins direct the formation of a _______ that will eventually form the new cell walls of the daughter cells.

If a cell developed a mutation in its MAP2K1 gene (encodes the MEK protein) that prevented MEK from being recognized by phosphatases, how would the EGFR signaling cascade and the cell’s behavior change?