which of hte following bets describes how chromosomes move toward the poles of the spindle during mitosis? Motor proteins of the kinetochores move the chromosomes along the spindle microtubules

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05-12-2022
Biology

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which of hte following bets describes how chromosomes move toward the poles of the spindle during mitosis? Motor proteins of the kinetochores move the chromosomes along the spindle microtubules

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Qwclear Qwclear · Answer 1 · 2022-12-07T12:57:18-05:00

The event which best describes the movement of chromosomes towards spindle during mitosis is by contraction of spindle microtubules and movement of motor proteins of the kinetochores, which suggests that option B is the right answer.

Chromosomes are the thread like structures made up of proteins and are found inside the nucleus of the cell. It carries the units of heredity that is genes on itself. During anaphase, the chromatids move towards the opposite poles and centromeres are pulled by microtubules. Chromosomes break at centromere. Chromosomes align at the metaphase plate at right angles to the spindle poles. At the end of anaphase, each pole contains a complete compilation of chromosomes.

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Which of the following best describes how chromosomes move toward the poles of the spindle during mitosis?

a. The chromosomes are "reeled in" by the contraction of spindle microtubules.

b. The chromosomes are "reeled in" by the contraction of spindle microtubules, and motor proteins of the kinetochores move the chromosomes along the spindle microtubules.

c. The chromosomes are "reeled in" by the contraction of spindle microtubules, motor proteins of the kinetochores move the chromosomes along the spindle microtubules, and non kinetochore spindle fibers serve to push chromosomes in the direction of the poles.

d. Nonkinetochore spindle fibers serve to push chromosomes in the direction of the poles.

e. Motor proteins of the kinetochores move the chromosomes along the spindle microtubules.