Parents Progeny 4 short and 2 long a. short X short b. short X short c. short X long d. short X long 8 short 12 short 3 short and 1 long e. long x long 2 long

The eye ring color in wood ducks is under the control of a single, sex linked gene.  The dominant allele (R) produces a white eye ring and the recessive allele (r) produces a green eye ring.  Provide the results to the following crosses (note birds have ZZ:ZW sex determination). a)  Provide the phenotypes and phenotypic ratios of a cross between a female with a white eye ring and a male with a green eye ring. b)  Determine the phenotypes and phenotypic ratios for a cross involving an F1 female and an F1 male from the above cross.

The rate of crossing over between two linked genes (r and w) is 0.44. The following cross is carried out: Rr Ww × rr ww. What proportion of the gametes of the Rr Ww parent were recombinant gametes? Explain your reasoning and state any assumptions you made.

The volantem lumbricus has been found to have a recessive genetic disorder on the X chromosome that leads to deformed wings (w) instead of their normal wing shape (W). Below is a pedigree from the crossing of some of the volantem lumbricus specimens in the lab. The carriers are not indicated in the pedigree. Complete the following for the below pedigree:Indicate the possible genotype for each individual in the pedigree. If they are a carrier then colour in half of the shape to indicate that. To the first daughter that has mated continue on the pedigree given the following info: there must be 6 more individuals added (3 male and 3 female), there must be 2 more generations added, and each generation must include a female and a male in the offspring. *

Perform two consecutive crosses similar to those of Mendel for the following individual plants. Plants with round seeds (RR) are crossing with plants with wrinkled seeds (rr). After the first cross, cross the offspring together to generate F2 offspring. What are the genotypic and phenotypic ration of F2?

As a graduate student, you join a lab and you are looking through some old notebooks. You find a linkage map someone has drawn. G--15 mu-----T----10 mu-------B If you plan to complete a test cross with a GtB/gTb male, A) What are all of the expected progeny genotypes? B.) How many of each genotype would you expect if you collected 1000 progeny?

Some mice are born with a yellow coat controlled by the gene Y. Examine the setup and outcome of the following crosses, which produce two generations: Po: yellow mouse X gray mouse F1 :5 yellow mice, 4 gray mice P: yellow mouse from F1 X yellow mouse from F1 F2 : 7 gray mice, 15 yellow mice with 9 dead Analyze the information provided to answer these questions: • What type of cross is the first cross? • Which trait is dominant? • What is the genotype of the yellow mouse in the first cross? • What is the genotype of the gray mouse in the second cross? Why are 9 mice dead in F2?

O All three genes are linked, but need to do more crosses and data to determine the gene order. All three genes are linked with the flower color gene (F) in the middle. All three genes are linked with the seed weight gene (S) in the middle. All three genes are linked with the leaf size gene (L) in the middle.

Pure-breeding parental strains of corn with the purple, smooth and yellow, wrinkled phenotypes were crossed to produce an F1 generation, which were then crossed to produce the F2 generation. Complete the diagram showing the results of the cross below. (I included an enlarged picture of the corn as well)

A three-point cross was conducted, 8500 progeny were evaluated, and the genetic map was determined to be:Gene J----3mu----Gene K-----5mu-----Gene LA total of 8 double cross-over progeny were identified among the 8,500 evaluated.  What is the coefficient of coincidence?