Question

TABLE 2 e-Wa C-Ws Knob Knobless Knob Knobless Knob Knobless Knob Knobless 12 34 0 Reorganize the data into the table below that will look more like the tables found in your textbook. Where K-Knob and k-Knobless; C- colored, c colorless; W-Waxy, Female Gametes Observed Identify Rec Rec for Rec for se that are for W&c K&W Parental, K & C ScO, DCO K-C-w k-c-W K-C-W K-C-w K-c-W k-C-w K-c-w k-C-W TOTAI RF for K & C RF for C&W RF for K& W They were the first to show crossing over and did it with corn! They found a strange chromosome 9, that had a funny knob on it but the normal homologous chromosome 9 does not have a knob on it or is knobless. Shown below is a test cross with a trihybrid. They have shown the chromosomes from the offspring from the trihybrid mother only On the table above, please enter the observed number for each of the gamete types. Remember that the mothers gametes will reflect the phenotype of the progeny Please put a P next to the parental genotypes, a SCO for single crossovers and a DCO for double crossovers. What is the rate of recombination between the knob on the tip of the chromosome and the Colorless gene? Identify the recombinants for Knob and Colorless on the table above and calculate the RF value. a. b. c. d. Do the same as above for the Colorless gene and the Waxy gene. e. Do the same as above for the knob and the waxy gene. f. Please draw the map with distances between the knob and the two genes. g. What is the rate of double crossovers? h. What is the expected rate of double crossovers? i. What is the coefficient of coincidence? What does this mean? j. What is the interference? What does this mean?

Answer 1

Parenb Payerk 3 k-c-W SCo SCO Sco Co T 63 63 63 63 zero