DESTROYER BIO # 137 2011 version HELP!

[ForeverKhaled]

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the answer says 20 chromatids

Isn't it 10?

my train of thought is... during interphase the chromosomes are in the unwound chromatin form. Each chromatin stands alone as a single chromosome which is a single chromatid. am I thinking of this wrong?

 

[predental012]

the question basically says that a somatic cell that was observed in its interphase has 10 chromosomes. how many chromatids is that?

the answer says 20 chromatids

Isn't it 10?

my train of thought is... during interphase the chromosomes are in the unwound chromatin form. Each chromatin stands alone as a single chromosome which is a single chromatid. am I thinking of this wrong?

Chromatin is chromosomes when they aren't dividing. In the S phase, DNA replicates. For every chromosome, there are two sister chromatids

 

[Bis-GMA111]

a strand of chromatin isn't a strand of a chromosome. chromatin binds closely together to give you a chromosome, each of which has 2 chromatids...up until anaphase, where you have the equivalent of 1 chromatid=1 chromosome

hope this helps

 

[ForeverKhaled]

a strand of chromatin isn't a strand of a chromosome. chromatin binds closely together to give you a chromosome, each of which has 2 chromatids...up until anaphase, where you have the equivalent of 1 chromatid=1 chromosome

hope this helps

oh ok this made sense. I forgot that during interphase when chromatin bundles up it form the sister chromatids (X looking). Instead i thought it formed single chromatids. Thank YOU

 

[Golfguy]

What stage of interphase?

If it's G1, I would think that the answer would be 10. During G2, 20.

 

[ForeverKhaled]

What stage of interphase?

If it's G1, I would think that the answer would be 10. During G2, 20.

It doesn't specify and i think part of the reason why I was confused was because I was thinking in terms of G1 when the book probably means part of G2