Biology, 28.06.2019 20:50 36murrayjonte
In the leghorn breed of chicken, white plumage is dominant over colored plumage, feathered shanks are dominant over clean shanks, and pea comb is dominant over single comb. the three genes assort independently. a homozygous white, feathered, pea-combed chicken is crossed with a colored, clean, single-combed chicken, and the f1 progeny are allowed to interbreed. what proportion of the f2 class will produce only white, feathered pea-combed chicken if mated to colored, clean, single-combed birds?
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During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.
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In the leghorn breed of chicken, white plumage is dominant over colored plumage, feathered shanks ar...
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