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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.
Explain the Disadvantages of tissue punch - There is a loss of keratini-ed tissue and this can lead to a compromised soft tissue barrier in cases where there is deficiency of a
Conventional Endodontic Treatment Surgical Endodontic & Retrograde sealing of Immature root Apex: After cleaning and shaping of the RC and before filling , I make a surgical
Explain Hormonal proteins Hormonal proteins coordinate the bodily activities. Various peptide and protein hormones (such as insulin and growth hormone) carry information tha
Q. First type of rheological model? This method establishes relation between the pressure gradient and the volume rate of flow. Here, the piston measurement is used to measure
Explain about the Smoking - methods of food processing? Smoking was known as a method of food preservation at an early date. Foods are exposed to smokes by burning some special
The cytoskeleton is a network of very little tubules and filaments spread throughout the cytoplasm of eukaryotic cells. It is made of microtubules, microfilaments and intermediate
In tomatoes, two alleles of one locus determine the character difference of purple versus green stems (alleles are P and p with P being completely dominatn and coding for purple st
what type of body cavities present
BRAI N (ENCEPHELON) Shape - Oval Positio n - Situated in cranial cavity of skull. Medulla oblongeta comes out of foramen magnum in the form of spinal cord. Colou
why do ecological models commonly have limited applications ?
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