Which of the following statements is true of linkage?
A)The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them.
B)The observed frequency of recombination of two genes that are far apart from each other has a maximum value of 100%.
C)All of the traits that Mendel studied-seed colour, pod shape, flower colour, and others-are due to genes linked on the same chromosome.
D)Linked genes are found on different chromosomes.
E)Crossing over occurs during prophase II of meiosis.

Question

Quizplus · Accepted Answer

Linkage refers to the tendency of genes located close together on a chromosome to be inherited together. The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them, as crossing over during meiosis is more likely to occur between genes that are farther apart on a chromosome. Therefore, statement A is true. B is false because the observed frequency of recombination can never exceed 50%, even for two genes that are very far apart. C is false because not all traits studied by Mendel are due to genes on the same chromosome. D is false because linked genes are located on the same chromosome. E is false because crossing over occurs during prophase I of meiosis, not prophase II.

Which of the Following Statements Is True of Linkage