3. RR and Rr carrots are orange, and rr carrots are white. But in an Rr carrot, a rare mitotic recombination event occurred, that gave the red carrot a patch of white. a) Starting with chromosome pictures something like these, diagram this chromosome crossover event and then b) draw them lined up at metaphase and take the cell through mitosis, showing how the cell could produce daughter cell progeny that give the white phenotype. R R

. For the chromosomes shown in Figure , draw the chromatids that would result from a two-strand double crossover: one crossover between C and D and the other crossover between D and E.

Part A Diagram A represents a chromosomal inversion event. A, B, C, D, E, F, are chromosomal loci. Represents a centromere. Diagram B shows a crossing over event between non-sister chromatids (darker vs. lighter lines) during meiosis I. A A Which of the following represents a recombinant chromosome resulting from the cross-over event shown in diagram B? E F MARK ALL THE ANSWES THAT APPLY. Inversion A E C B B EEEE

1. How many asci contain a parental order of ascospores? 2. How many asci contain ascospores representing crossing over? 3. How many total segregants were analyzed? 4. What is the distance from the spore color gene to the centromere?