Assume that cells that are about to undergo meiosis are treated with a chemical that blocks crossing over but does not affect the cells in any other way, and four viable cells are produced by the two divisions of meiosis. What will be the consequence of such a treatment?
A) The four products of meiosis will be genetically identical.
B) The four products of meiosis will all be genetically unique.
C) All the chromosomes of two of the products of meiosis will have chromosomes that are paternal in origin but the other two products will have chromosomes that are of both paternal and maternal origins.
D) All the chromosomes of two of the products of meiosis will have chromosomes that are maternal in origin but the other two products will have chromosomes that are of both paternal and maternal origins.
E) Two of the products will be genetically identical but genetically different from the other two products, which will also be genetically identical.

Question

Quizplus · Accepted Answer

Without crossing over, homologous chromosomes do not exchange genetic material, leading to two pairs of genetically identical cells after meiosis.

Assume That Cells That Are About to Undergo Meiosis Are