A micrograph of a dividing cell from a mouse showed 19 chromosome...

Question

A micrograph of a dividing cell from a mouse showed 19 chromosomes, each consisting of two sister chromatids. During which of the following stages of cell division could such a picture have been taken? (Explain your answer.)
a. prophase of mitosis
b. telophase II of meiosis
c. prophase I of meiosis
d. prophase II of meiosis

Accepted Answer

Hello everyone and welcome to today's video. Today we're going to be talking about me aosis. So what is the main difference between interface one and interface to which our faces of Mayo sis. So I want you to recall from previous videos the faces that make up first of all interface one. Well this is going to be made up by the G one phase that then moves into the S one phase and this moves into the G two phase and then interface is completed and the cell can undergo May aosis. However these G1 phase is going to be referred to as the growth phase but this s phase is going to be referred to as the synthesis phase. So here is where D. N. A. Gets replicated Once the sale has completed interphase one, it has already divided or replicated its DNAa and this D. N. A. Is all we're going to need in order for the cell to undergo May Aosis because of this. Once May aosis one is completed. The and the cell enters May interface to in order to then enter May Aosis to the sale will not undergo the synthesis phase again because the D. N. A. Has already been replicated in interface one. Because of this, the correct answer choice is going to be answer choice B. There is no S face in interface to again because the S phase replicates the D. N. A. And the D. N. A. Has already been replicated in the S one phase of interface one. I really hope this video helped you and I hope to see you on the next one.

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