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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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sniderwes sniderwes
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Posts: 4
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10 years ago
The choices are:

A. No, heteroduplex DNA is only created during homologous recombination when the homologs have different DNA sequences.
B. Yes, heteroduplex DNA is always created during homologous recombination.
C. Heteroduplex DNA formation and homologous recombination are not related.

I think it's B, but I'm not sure
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#1
Staff Member
Educator
10 years ago
The heteroduplex is double-stranded DNA formed from DNA of different homologs

The heteroduplex may contain nucleotide mismatches

The invading strand is extended, with DNA synthesis guided by the intact template strands

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Mastering in Nutritional Biology
Tralalalala Slight Smile
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#2
10 years ago
Thank you so much!
sniderwes Author
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#3
10 years ago
Quote from: padre (10 years ago)
The heteroduplex is double-stranded DNA formed from DNA of different homologs

The heteroduplex may contain nucleotide mismatches

The invading strand is extended, with DNA synthesis guided by the intact template strands

Check out the amazing attachment, should help PLENTY

Thanks for the response @Padre . The only thing I'm still unsure about is when it says "heteroduplex DNA is only created during homologous recombination when the homologs have different DNA sequences."

Wouldn't homologs always have different DNA sequences? They're not sister chromatids so how could they be identical? That is the reason I'm having trouble differentiating between A and B.
wrote...
#4
10 years ago
Thanks for the help.
wrote...
#5
10 years ago
Thank you!
wrote...
#6
Staff Member
Educator
10 years ago
Quote from: sniderwes (10 years ago)
Wouldn't homologs always have different DNA sequences?

True, but they could possess the same allele.
Mastering in Nutritional Biology
Tralalalala Slight Smile
wrote...
#7
10 years ago
thank u
wrote...
#8
10 years ago
thank you!
wrote...
#9
Staff Member
Educator
10 years ago
ya ya ya
Mastering in Nutritional Biology
Tralalalala Slight Smile
wrote...
#10
10 years ago
Thank you so much!!!
wrote...
#11
10 years ago
thank you!
wrote...
#12
9 years ago
Thank you!
wrote...
#13
9 years ago
answer is Yes, heteroduplex DNA is always created during homologous recombination.
ellie8866
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