Choose the true statement below.
A)When two genes are over 50 map units apart,a crossover can theoretically occur 100% of the time.
B)The percentage of tetrads involved in exchange between two genes is equal to the number of recombinant progeny seen.
C)Linkage viewed from results of typical crosses always occurs when two loci are on the same chromosome.
D)When two genes are over 50 map units apart,a crossover would theoretically occur 0% of the time.
E)A single crossover on a chromosome will always yield the recombinant phenotype of the genes you are interested in.

Question

Quizplus · Accepted Answer

When two genes are over 50 map units apart, they behave as if they are independently assorting because the likelihood of a crossover event occurring between them is so high, theoretically up to 100%. This is because the distance allows for multiple crossover events to potentially occur, making their segregation appear as if they are on separate chromosomes.

Choose the True Statement Below