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If alleles L, M, and N are on the maternal chromosome and l, m, and n are on the paternal chromosome, the only way that a gamete from a heterozygote will produce a gamete with alleles l, m, and N is through ... produces only new DNA.
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www.mackobza.com/genbiojuly2004_study3.htm
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New alleles arise from existing ones by mutation. The diversity of alleles produced in this way is the basis for hereditary variation and evolution. The different alleles of a given gene determine the degree to which the specific hereditary characteristic controlled by that gene is manifested.
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www.answers.com/topic/allele
www.answers.com/topic/allele
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Cells and Genetics question: New alleles arise by? By Mutation ... New allesles arise by? Why do new alleles arise? What do alleles arise by? New alleles arise from what? What does new alleles arise from? Do new alleles arise by mutation? Does new alleles arise by mutation? New alleles arise in the genetic code of a...
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wiki.answers.com/Q/New_alleles_arise_by
wiki.answers.com/Q/New_alleles_arise_by
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HUMAN MUTATION 3:365372 (1994). RESEARCH ARTICLE. New Alleles at Microsatellite Loci in CEPW Families. Mainly Arise From somatic Mutations in the ...
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doi.wiley.com/10.1002/humu.1380030407
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In any species, there will usually be several variants, or alleles, of each gene. The alleles of a specific gene are related to each other -- new alleles arise from older ones by mutation or transcription errors (mistakes in copying).
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www.pbs.org/wgbh/evolution/library/05/1/l_051_02.html
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Is it common for new HD alleles to arise? ... On the population level, it was also assumed that new mutations did not significantly affect the frequency of HD. If an HD allele did develop, researchers thought the HD allele could mutate back to a non-HD allele just as easily – thereby not changing the overall frequency of...
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www.stanford.edu/group/hopes/causes/popgen/aj3.html
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New alleles arise only by mutation - rare and random accidents. Only when produced in gametes are they passed to offspring, but once there, they are inherited from that point on.. ... (don't we wish!) New alleles cannot be created on demand, and can disappear from a gene pool if conditions do not favor their...
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www.biology.iupui.edu/biocourses/N100H/ch18evol.html
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Understanding the frequency with which new resistance alleles arise and their subsequent patterns of spread is critical to our attempts to manage drug resistance in parasite populations. ... De novo mutation appears to be less important than migration for introducing resistance alleles into parasite populations.
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www.medscape.com/medline/abstract/15878153
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However, the cost of natural selection for new alleles that arise by mutation is assumed to be high, based on the assumption that new mutant alleles arise in natural populations as single events [1/(2N) of the total alleles].
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jhered.oxfordjournals.org/cgi/content/abstract/95/4/277
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