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I know of an example in development biology. Here is an example where noise in retinoic acid gradients is required for the boundaries in the developing hindbrain to sharpen. A related result is that the zebrafish hindbrain has a protein to modulate noise, but does not reduce the noise to zero. Together these results show that noise in the retinoic acid ...


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We need to make a distinction between the genetic map of a chromosome, which is usually built up from meiotic recombination frequencies between linked genetic markers, the physical map of a chromosome, which used to be made up of clones and contigs, but is now usually derived from the reference genome sequence, and the cytological map of a chromosome, which ...


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Recombination does not make any two genes completely independent because there will not systematically be a recombination event between two given loci (=position on the chromosome). Distance between loci Consider two scenarios that describe the position of two loci on a chromosome. Tightly linked loci Consider two very closely linked loci. Let's say ...


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Meiosis does not determine sexual form. Eukaryotes use meiosis and fertilization to recombine genes to form new combinations. Meiosis does produce haploid cells from diploid cells, but that has nothing much to do with the sexual forms involved. In the case of the algal genus Chara, the organism's life cycle is entirely haploid except for the ...



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