AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The nuclear membrane is formed around the newly-formed sets of daughter chromosomes during the telophase.
A
true
B
false
Explanation: 

Detailed explanation-1: -The Endoplasmic reticulum forms the nuclear membrane around the groups of daughter chromosomes during the telophase. The chromatin fibers play an important role in reshaping of the endoplasmic reticulum during nuclear membrane formation.

Detailed explanation-2: -During telophase, the newly separated chromosomes reach the mitotic spindle and a nuclear membrane forms around each set of chromosomes, thus creating two separate nuclei inside the same cell. As Figure 4 illustrates, the cytoplasm then divides to produce two identical cells.

Detailed explanation-3: -During telophase, a nuclear membrane forms around each set of chromosomes to separate the nuclear DNA from the cytoplasm. The chromosomes begin to uncoil, which makes them diffuse and less compact.

Detailed explanation-4: -During telophase, what remains of the network of spindle fibers is dismantled. Also, around each complete set of chromosomes, a nuclear envelope begins to form and the daughter chromosomes begin to decondense. At this point, the actual process of mitosis is complete.

Detailed explanation-5: -During telophase, two distinct nuclear membranes develop encompassing the two identical sets of chromosomes. At the same time, the cytoplasm divides between the two new cells, and the cell membrane begins to pinch off the cell contents into two daughter cells.

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