please, explain 1. After the nuclear envelope breaks down, microtubules gain acc

Question

please, explain

1. After the nuclear envelope breaks down, microtubules gain access to the chromosomes and, every so often, a randomly probing microtubule captures a chromosome and ultimately connects to the kinetochore to become a kinetochore microtubule of the spindle.

a.True

b. False

2. Which of the following statements is true?

a.The mitotic spindle is largely made of intermediate filaments.

b.The contractile ring is made largely of microtubules and actin filaments.

c.The contractile ring divides the nucleus in two.

d. The mitotic spindle helps segregate the chromosomes to the two daughter cells.

Explanation / Answer

Ans 1 true

During mitosis and meiosis, the microtubules that were controlled by newly formed spindle poles, attaches to kinetochore. This attaches kinetochore to the spindle and help it attach to the metaphase plate.

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