-1
$\begingroup$

The following question confused me at first

enter image description here

However, I presumed that it must be in comparison to meiosis. In that case D would be correct.

However, the correct answer is A.

How can this be? I know that in mitosis it is the chromatids that are 'pulled away' to opposite poles. In meiosis, this is whole chromatids but anaphase still occurs.

I suspect I don't understand the question. Where have I gone wrong in my reasoning?

$\endgroup$
5
$\begingroup$

Cell cycle can be divided into two phases:

1. Interphase

2. M-phase(Mitotic phase)

Note: M-phase can also mean Meiotic phase but it is not the full form of the acronym.

So M-phase in mitosis has four phases:

  • Prophase
  • Metaphase
  • Anaphase(your answer)
  • Telophase

A mitotic cycle:

ncert

The rest of the options:

B. Cytokinesis

Cytoplasmic division begins during or after the late stages of nuclear division in mitosis and meiosis.

Your question doesn't seem to consider cytokinesis as a part of M-phase (i.e to be occurring during the late karyokinesis). So it has to be ruled out.(Making some assumptions as this is a key to reaching the single correct answer in MCQs, if not this would have had two right answers.)

C. DNA replication - happens in S-phase of interphase

D. Interphase (certainly not the one)

Source: ncert

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.