Explain the difference between chromatins and chromatids, and what part of the DNA each of them make up? What role do they have in the structure of DNA? How are germ cells and gametes related? Is meiosis I or II responsible for the XYY individual?
Which is the better mode of reproduction - sexual or asexual? Why? If sexual reproduction in humans occurs correctly, the gametes formed by meiosis are ___ & the zygotes formed by fertilization are ___. Explain. Asexual reproduction in fungi occurs by what process? ...
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In most organisms, the number and distribution of crossovers that occur during meiosis are tightly controlled. All chromosomes must receive at least one ‘obligatory crossover’ and crossovers are prevented from occurring near one another by ‘crossover interference’. However, the mechanistic basis of...
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Knowledge of the mechanisms that lead to reproductive isolation is essential for understanding population structure and speciation. While several models have been advanced to explain post-mating reproductive isolation, experimental data supporting most are indirect. Laboratory investigations of this phenomenon ...
a既然你没有时间,我们就不要一起玩 Since you do not have the time, we do not play together[translate] a我不解释了,请不要生气 I did not explain, please do not have to be angry[translate] aImportant for Male Meiosis, Anther Dehiscence, 重要为马累成熟分裂,花药开裂,[translate] ...
Explain why prokaryote populations can adapt rapidly to changes in their environment. Verified step by step guidance 1 Understand that prokaryotes, such as bacteria, have simple cellular structures without a nucleus and reproduce quickly through binary fission, which allows for rapid...
Nondisjunction in Meiosis | Definition, Results & Examples from Chapter 11 / Lesson 14 441K Learn the nondisjunction definition, the results of nondisjunction, and nondisjunction examples. Also learn about common disorders caused by nondisjunction and how they are diagnosed. Related...
Keywords: polyploidy; meiosis; evolution 1. Suppression of Meiotic Defects in Polyploids in Plants Polyploids, which result from whole genome duplication (WGD) events, are thought to have enhanced adaptability, which might explain why they are so pervasive in nature [1]. Their strong stress re...