When analyzing octads (ordered tetrads), second-division (MII)segregations result from
A)single crossovers between linked genes.
B)double crossovers between linked genes.
C)single crossovers between a gene and a centromere.
D)independent assortment of unlinked genes.
E)nondisjunction of homologs.

Question

Quizplus · Accepted Answer

Second-division (MII) segregations in octads result from single crossovers between a gene and its centromere. This type of crossover leads to a pattern where two of the four products of meiosis show the crossover event in the second meiotic division, indicative of MII segregation.

When Analyzing Octads (Ordered Tetrads), Second-Division (MII)segregations Result from