AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following phases is the first step in mitosis? See Figure M-4.
A
metaphase
B
telophase
C
prophase
D
anaphase
Explanation: 

Detailed explanation-1: -Prophase is the first stage in mitosis, occurring after the conclusion of the G2 portion of interphase. During prophase, the parent cell chromosomes-which were duplicated during S phase-condense and become thousands of times more compact than they were during interphase.

Detailed explanation-2: -Prophase-the first stage of mitosis. Spindles attached to kinetochores begin to shorten. This exerts a force on the sister chromatids that pulls them apart. Spindle fibers continue to shorten, pulling chromatids to opposite poles.

Detailed explanation-3: -Stages of mitosis: prophase, metaphase, anaphase, telophase.

Detailed explanation-4: -Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses.

Detailed explanation-5: -The Principal Stages of M Phase (Mitosis and Cytokinesis) in an Animal Cell. The five stages of mitosis-prophase, prometaphase, metaphase, anaphase, and telophase-occur in strict sequential order, while cytokinesis begins in anaphase and continues through telophase.

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