2. In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are known to be on separate chromosomes. In the course of a routine mating check experiment, a breeder...

Extracted text: 2. In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are known to be on separate chromosomes. In the course of a routine mating check experiment, a breeder got the following results upon crossing T/t:R/r with a double recessive strain (t/t/r): Number of progeny genotype T/t; R/r t/t; r/r T/t; r/r t/t; R/r In addition to these data she noted that the cobs contain only about 50% of the expected kernels. Note that in corn, each kernel is the result of one mating or can be considered one progeny. Hence 50% of the matings are not producing viable offspring. a. Based on the location of these genes on separate chromosomes what is the 98 104 3 5 expected result? b. Suggest a hypothesis of a genetic process that could be used to explain the potential karyotype of one of these parents. c. What are the actual genotypes of the parents? d. Draw a diagram (hand drawn diagrams are fine just scan the image and insert it into your exam as picture) showing the arrangement of the alleles on the parental chromosomes. e. Based on your hypothesis from part b, reassign genotypes to the progeny classes. Enter your new genotypes into the table above as an additional column. f. If the karyotype was done on the progeny what unusual feature would be observed?