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Mutations are the only kind of variability generating mechanism in prokaryotes and asexually reproducing organisms. But in eukaryotes where sexual recombination occurs, even in one generation there is a marked reshuffling of genes in the chromosomes which amplifies the genetic variability in a population. The kind of variability generated by recombination is tested by natural selection in as many genetic backgrounds as possible and in as short time as possible (say in one generation). Thus one of the greatest and fundamental advantages of sexual reproduction is the generation of variability. Provided the populations are large, even if mutations do not exist, the mechanism of sexual recombination alone would be generating new genotypes for very long time.
Calliphora vicinia larvae grow at different rates on different body tissues The problem which was approached in this experiment is to measure the growth rate of the
Which of the following statements concerning the inheritance of a dominant trait is true? Every affected person must have at least one affected parent. The trait is observed to ski
EMBRYOLOGICAL EVIDENCES - A comparative study of embryology of different groups of animals reveals certain features that provide evidences for organic evolution. There ar
Assuming independent assortment, what proportion of the offspring of the cross AaBbCcDd × AabbCCdd will have the aabbccdd genotype?
Japanese encephalitis The Japanese encephalitis is a mosquito-born flavivirus infection that causes encephalitis in human and equines and abortion in pigs, caused by Japanese
#Is GMO food good as the prospective of the ethic values of the society?..
Determine the function of human body system Human body has different systems to perform different functions. A system consists of organs to perform a particular set of function
Micrographia is abnormally small, cramped handwriting and/or the progression to continually smaller handwriting. This is one of the symptoms of Parkinson''s disease.
Why Fats, Oils and Sugar are important for human body? This group imparts flavour to the items and thereby improves the palatability. Items incorporating them do melt in the mo
What are the stages into which photosynthesis is divided? Photosynthesis is separated into the photochemical stage, or light reactions, and the chemical stage. Photosynthesi
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