AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or False? Before cells undergo meiosis they pass through interphase first.
A
true
B
false
Explanation: 

Detailed explanation-1: -In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase. Before entering meiosis I, a cell must first go through interphase. This is the same interphase that occurs before mitosis.

Detailed explanation-2: -Meiosis I. Before entering meiosis I, a cell must first go through interphase. As in mitosis, the cell grows during G 1start subscript, 1, end subscript phase, copies all of its chromosomes during S phase, and prepares for division during G 2start subscript, 2, end subscript phase.

Detailed explanation-3: -Meiosis is preceded by an interphase which is nearly identical to the interphase preceding mitosis. During interphase, the DNA of the chromosomes is replicated (during S phase).

Detailed explanation-4: -Interphase is the longest part of the cell cycle. This is when the cell grows and copies its DNA before moving into mitosis. During mitosis, chromosomes will align, separate, and move into new daughter cells. The prefix inter-means between, so interphase takes place between one mitotic (M) phase and the next.

Detailed explanation-5: -Meiosis I, the first meiotic division, begins with prophase I. During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes. The pairs of replicated chromosomes are known as sister chromatids, and they remain joined at a central point called the centromere.

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