Biology, 23.07.2019 12:30 brayann5761
Suppose that seed size in a particular plant species is a polygenic trait. a grower crosses two different pure-breeding varieties of the plant, and measures seed size in the f1 progeny. she then backcrosses the f1 plants to one of the parental varieties and measures seed size in the backcross progeny. the grower finds that seed size in the backcross progeny has a higher variance than seed size in the f1 progeny. what is the most likely explanation for the higher seed size variability in the backcross progeny? the backcross progeny are uniformly heterozygous at all seed size loci. the backcross progeny have more mutations because they result from more cell divisions. unlike the f1 generation, the backcross progeny are homozygous recessive. unlike the f1 generation, the backcross progeny are homozygous dominant. the backcross progeny are not uniformly heterozygous at the seed size loci.
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Biology, 21.06.2019 16:10
Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:
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Biology, 22.06.2019 01:00
Mike has a problem with his testosterone. he is unable to produce enough. which will most likely be affected by his inability to produce testosterone? check all that apply.
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Biology, 22.06.2019 05:00
Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.
Answers: 3
Biology, 22.06.2019 18:30
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
Answers: 2
Suppose that seed size in a particular plant species is a polygenic trait. a grower crosses two diff...
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