Me123456789
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#1
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#1
can someone please have a look at question 1(bi) and explain why the answers could be point 2 and 3
(In Figure 2)
1. Chromatids have separated
(during anaphase);
2. Chromatids have not replicated;
3. Chromosomes formed from only
one chromatid;
here is the link to the question
http://pmt.physicsandmathstutor.com/...%20A-level.pdf
thanks
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macpatgh-Sheldon
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#2
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Hi,

Point 2: at the end of this division [looks like mitosis as the chromatids have moved apart] the chromatids are still SINGLE, i.e. there is no homologous pairing; this will occur later when the DNA replicates.

Point 3:I suppose you could argue that EACH chromatid will later give rise to EACH chromosome as explained in Point 2 above, although I think it is a very weird way of putting it.
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Me123456789
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#3
Report Thread starter 4 years ago
#3
(Original post by macpatelgh)
Hi,

Point 2: at the end of this division [looks like mitosis as the chromatids have moved apart] the chromatids are still SINGLE, i.e. there is no homologous pairing; this will occur later when the DNA replicates.

Point 3:I suppose you could argue that EACH chromatid will later give rise to EACH chromosome as explained in Point 2 above, although I think it is a very weird way of putting it.
Thank You! it makes a lot more sense now
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