Which of the following information that you obtain from a 3p

Which of the following information that you obtain from a 3-point cross allows you to identify the double-crossover progeny?

Which of the following information that you obtain from a 3-point cross allows you to identify the double-crossover progeny? Identification of the two least numerous phenotypes. Identification of the two most numerous phenotypes. Determination of whether alleles are in coupling or repulsion. A and B. All of the above.

Solution

Answer:

D). A and B

Three-point test cross determine the order of gene along with the following details.

1.) The nonrecombinant progeny (two most-numberous phenotypes)

2.) The double crossover progeny (two-least numerous phenotypes)
3.) We can compare the phenotype of double crossover progeny with the phenotype of nonrecombinant progeny, they should be alike in two characteristics and differ in one
4.) We can know the characteristic that differs between the double crossover and the nonrecombinant progeny is encoded by the middle gene