Would it be possible to observe crossing-over between sister chromatids? Why or why not?
A) No. Crossing-over is not observable.
B) No. Sister chromatids are not present within the same nucleus.
C) No. Since they are genetically identical you could not tell the difference without labeling the chromatids.
D) Yes. Sister chromatids look different from each other.
E) Yes. One sister chromatid comes from mother and one comes from father.

Question

Quizplus · Accepted Answer

Since sister chromatids are genetically identical, you cannot observe crossing-over between them unless you label each chromatid in some manner.

Would It Be Possible to Observe Crossing-Over Between Sister Chromatids