2011 DAT #183 Biology

[pandalove89]

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Consider a somatic cell undergoing mitosis. At anaphase the chromosome number is:

a) N
b) 2N
c) 4N
d) 6N
e) 3N


I thought it would be N since the original 2N would be split but the answer is c) 4N. Why?

 

[hplfe]

It is because during anaphase, the paired chromosomes separate but are still in one cell, thus you have twice the number of chromosomes 2*2n

 

[toothhornet88]

It is because during anaphase, the paired chromosomes separate but are still in one cell, thus you have twice the number of chromosomes 2*2n

exactly! plus dont forget that when chromosome consisting of sister chromatids separate in mitosis each chromatid becomes individual chromosomes

 

[pandalove89]

Wait that confused me even more. how can you have twice the number of chromosomes when splitting during anaphase?

Could someone tell me the number of chromosomes in terms of N during each phase of mitosis and meiosis?

I'm getting really confused.

 

[needzmoar]

Wait that confused me even more. how can you have twice the number of chromosomes when splitting during anaphase?

Could someone tell me the number of chromosomes in terms of N during each phase of mitosis and meiosis?

I'm getting really confused.

You should look at a bio book for pics/diagrams. You'd probably understand it better by looking at pics rather than reading words trying to describe a picture/scenario.

 

[newbie1990]

:

You should look at a bio book for pics/diagrams. You'd probably understand it better by looking at pics rather than reading words trying to describe a picture/scenario.

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