Which of the following statements is TRUE about anaphase?
A)When sister chromatids separate, each is called a chromosome.
B)Motor proteins drag chromosomes towards the poles.
C)Some microtubules slide past each other, pushing the poles farther apart.
D)Kinetochore microtubules shrink at both ends.
E)All of these are true.

Question

Quizplus · Accepted Answer

- A) When sister chromatids separate, each is called a chromosome - this is true, as sister chromatids are joined together by a centromere and are considered to be one chromosome until they separate during anaphase.
- B) Motor proteins drag chromosomes towards the poles - this is also true, as the kinetochores on the chromosomes are able to bind to motor proteins, which use energy to move the chromosomes along the microtubules towards the poles.
- C) Some microtubules slide past each other, pushing the poles farther apart - this is also true, as the spindle fibers from the opposite poles of the cell increase in length, some of them slide past each other and push the poles apart.
- D) Kinetochore microtubules shrink at both ends - although microtubules will eventually shrink during telophase as the cell prepares to divide, it is not true that kinetochore microtubules shrink at both ends during anaphase. Instead, they typically only shrink at the kinetochore end, allowing the chromosome to move towards the pole. 
Therefore, option E is the correct answer.

Which of the Following Statements Is TRUE About Anaphase