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Crossover

The interchange of sections between pairing homologous chromosomes during the prophase of meiosis.


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Meiosis prophase I crossover

“Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes.” http://en.wikipedia.org/wiki/Chromosomal_crossover Question: Due to the multiple ...

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by gs99
Fri Mar 07, 2014 9:23 pm
 
Forum: Molecular Biology
Topic: Meiosis prophase I crossover
Replies: 0
Views: 76

Re: Year 11 Meiosis helpp!!!

During the first part of meiosis (prophase 1) there can be recombination (crossover) of homologous chromosomes. This would show up on your diagram as being a little bit of red on one arm of the blue X, and a matching little bit of blue in the same place of the ...

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by ChrisHoStuart
Wed Oct 16, 2013 9:36 am
 
Forum: Human Biology
Topic: Year 11 Meiosis helpp!!!
Replies: 3
Views: 1513

Re: Genes in the same linkage group are inherited together?

A centimorgan is the distance between two loci where the frequency of a crossover between the two loci per generation is 0.01. So the frequency of crossover between two genes 1.5 cM apart will be 0.015, and the frequency of a crossover between genes 140 cM apart ...

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by wbla3335
Fri Jul 19, 2013 6:38 am
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 1999

Re: Genetics Hard problem!

... 1 percent.) I scanned the whole passage in the attachment. Answer is 34 m.u. This is what I did: B+/ba x ba/ba (parental strands) If there is no crossover, B+/ba (black), ba/ba (white) If there is one crossover (between the sister chromatids), BA/ba (albino), b+/ba (brown) So in the crossover, ...

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by Cat
Sun Jul 07, 2013 10:04 pm
 
Forum: PDF & Doc Files
Topic: Genetics Hard problem!
Replies: 2
Views: 3226

How are balancer chromosomes introduced?

... from homozygotes of stock B die. How does this happen? The time difference must be a factor, I imagine. Also, the TM2 balancer has a double crossover region near the smg gene.

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by hnanon
Mon Oct 22, 2012 3:24 am
 
Forum: Genetics
Topic: How are balancer chromosomes introduced?
Replies: 0
Views: 762
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