Questions tagged [recombination]

The process of breaking and recombining strands of DNA.

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Question about genetic recombination

I am having some difficulty understanding a few things about genetic recombination, in part because of confusion from different diagrams in books. First of all, I wanted to verify whether I have ...
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How is randomness of the branch migration process ensured?

Branch migration (part of genetic recombination) is a random process. It looks like Ruv-ABC proteins are mainly responsible for this process, but how is randomness ensured? After all, it can only be a ...
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How is the right amount of nucleotides synthesised during homologous recombination?

I'm reading about homologous recombination in the context of double-strand break repair. It seems like the trick is that around the break, homologous recombination uses a template duplex to generate ...
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Need clarification on Coalescent with Recombination

I've been reading about recombination with coalescent. The link to that file is as follows: http://www.stats.ox.ac.uk/__data/assets/pdf_file/0008/4688/Reading_for_Recombination.pdf I get the part ...
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Calculating the recombination factor of four point genetic cross?

So, I'm trying to work out the recombination factor (RF) from this set of data: Which shows the 16 phenotypes of progeny of a cross of Saccharomyces cerevisiae yeast. I know how to go about a three ...
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Is recombination suppressed in the males of all Drosophila species? Any other species?

Following up from this question, I am wondering if the phenomenon of genome-wide suppressed male recombination is limited to Drosophila melanogaster or is common to all Drosophila? The answer to the ...
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Recombination frequency as a function of genomic location in E coli?

Are there any databases or papers that give recombination frequency as a function of position in the E coli genome?
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Study case of the inheritance system of Oenothera

I've been told some interesting facts about oenothera. Apparently in this species some lineages have been through some translocations and in results to these translocations and in consequence, some ...
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Why do genetic testing companies (FTDNA,AncestryDNA,23andme) express DNA shared in centimorgans (cM) instead of in number of base pairs or in percent?

Expressing DNA shared in number of base pairs or in percent of total genome would be so much simpler and easier to understand for the customers. .
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How did the molecular machinery for recombination originate?

I'm wondering about the origins of genetic recombination. During crossover new chromosomes are created. They have different allele combinations from the original two chromosomes. This process allows ...
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Cis and trans linkage

Question: Two dominant non-allelic genes are 50map units apart, the linkage is: (A) Cis type (B) Trans Type (C) Complete (D) Absent/Incomplete My take: After a lot of ...
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Recombination between organelles?

In plants, organelles DNA inside chloroplasts and mitochondrias can undergo recombination, intra- or inter-molecular. In a single cell, there are numerous chloroplasts/mitochondria. Can we imagine ...
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Join a linear plasmid just using a primer (without ligase enzyme)

Can I use just a primer and PCR to join the cutted plasmid like this ? without using any further enzyme like ligase. After the linear dsDNA plasmid annealed into 2 ssDNA, primer will bind to middle. ...
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DNA strand displacement and Branch migration- the same or different or interrelated?

So, recently I have begun studying DNA strand displacement and then I come across the term 'branch migration' (p.s. I am not a biology major student). What I understand is that branch migration is ...
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100 views

How would homologous recombination and mutations affect speciation?

I'm wondering how homologous recombination and mutations can affect how speciation can occur from one species (so that 2 will be created). I'm doing research and I found that different mutations and ...