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Crossing over can effect on more then one gene i.e. at least two as in crossing over the genes of homologus chromatin get interchanged so it effect at least two genes and can effect or change more then two genes depend upon the linking and crossing over capability
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Gene maps are based on?
the frequencies of crossing over between genes
Propose how crossing-over during meiosis might affect the segregation of genes that are on the same chromosomes?
Segregation is the separating of genes into different cells during meiosis. We have found that there are many more genes that display segregation than there are chromosomes. The explaination is crossing-over - where during prophase I chromosome arms of homologous chromosomes break off and attach to each other. This allows genes on the same chromosome to segregate.
What is the exchange of genes between homologous pairs of chromosomes?
homologous chromosomes exchange alleles during crossing over.
Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur?
The genes are different because crossing over causes some of the genes on the homologous pair to shuffle, creating variation.
Explain how crossing over can unlink genes?
crossing over can unlink genes because when crossing over occurs it a portion of one chromosome is replaced by a region of a homologous chromosome and during this the alleles that were presently on that linked gene could possibly be separated
Gene maps are based on?
the frequencies of crossing over between genes
How does crossing over affect the genetic diversity of a species?
in crossing over the gens present on chromosomes forms linkage so the character are exchange & thus it lead to recombination of genes that affect genetic diversity
What is a sentence for crossing over?
Crossing over is the exchanging of genes in a homologous pair.
What is a sentence for crossing-over?
Crossing over is the exchanging of genes in a homologous pair.
What is the exchange of genes between homologous pairs of chromosomes?
homologous chromosomes exchange alleles during crossing over.
Propose how crossing-over during meiosis might affect the segregation of genes that are on the same chromosomes?
Segregation is the separating of genes into different cells during meiosis. We have found that there are many more genes that display segregation than there are chromosomes. The explaination is crossing-over - where during prophase I chromosome arms of homologous chromosomes break off and attach to each other. This allows genes on the same chromosome to segregate.
How does crossing over incrase phenotypicvariation in a population?
crossing over allows new genes to be made by the crossing over itself or by mutations that occur in the genes as crossing over occurs. since the phenotype is the physical appearance of the gene, the crossing over can change the genotype which can change the phenotype.
When crossing-over occurs what genes stay together?
linked genes
Why does the frequency of the cross overs give information about the relative locations of genes?
its simple the crossing over of genes ha a location looc for a chromosomes with a different chromatid you have the location
Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur?
The genes are different because crossing over causes some of the genes on the homologous pair to shuffle, creating variation.
Explain how crossing over can unlink genes?
crossing over can unlink genes because when crossing over occurs it a portion of one chromosome is replaced by a region of a homologous chromosome and during this the alleles that were presently on that linked gene could possibly be separated
Genetic mixing of genes that result from crossing-over?
Recombination is the genetic mixing of genes that result from crossing over.
