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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.
What is the generic function of leukocytes? What are leukocytosis and leukopenia? The generic function of leukocytes is to contribute in the defense of the body against strange
G L YCOGEN Polymer of a-D-glucose. It has 5000-30000 units of a-D-glucose. Glycogen is glucosan homopolysaccharide which is the major reserve food of animals, fungi and
PHOSPHORUS It is present in vegetables, grains (oat metal, wheat meal), milk, eggs, cheese, meat, fish, etc. It helps in - (a) Like calcium it is a constituent of bones.
After glaciers, ice caps and snowfields, ground water is the next largest fresh water reservoir. Precipitation that does not evaporate back into the air and does not run off over t
Neurological symptoms and signs occur in 30 to 40 per cent of patients with IE, are more frequent when IE is caused by S. aureus, and are associated with increased mortality rates.
Q. Why is it said that during photosynthesis carbon dioxide is improved to form glucose? During photosynthesis carbon dioxide is energetically improve with hydrogen from water.
Q. What is Dietary fibre? Dietary fibre is defined as plant polysaccharide resistant to hydrolysis by the digestive enzymes in the human intestinal tract. It includes: • Str
Genomic clone is the piece of a DNA taken from genome of a cell or an animal, and spliced into the bacteriophage or other kind of cloning vector. A genomic clone might contain cod
Clinical warning signs of implant failure The clinical signs of implant failure are: 1) Connecting Screw loosening. 2) Connecting Screw failure. 3) Gingival bleeding a
What are the main biological functions in which chlorine ions participate? Like sodium cations, chlorine anions actively participate in the regulation of the osmolarity of tiss
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