The african clawed frog (xenopus laevis) is allotetraploid, likely as a result of an interspecies mating long ago, followed by a duplication of the entire genome. xenopus laevis is fertile and has a normal life cycle. in contrast, mules, the allodiploid offspring of a male donkey and a female horse, are generally sterile. why can xenopus reproduce and mules cannot?
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Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .
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Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.
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Explain why the plants cortex would serve as the best food source for animals
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Biology, 22.06.2019 10:40
Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above
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The african clawed frog (xenopus laevis) is allotetraploid, likely as a result of an interspecies ma...
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