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Explain Crossing Over in genetics?
Crossing over is when the arms of homologous chromosomes exchange segments (and therefore genes) with each other. Recall that one of the homologues originally came from the father's sperm and the other came from the mother's egg.
During Prophase I of Meiosis the homologous chromosomes pair up to form a tetrad. The arms of the chromatids overlap, and can sometimes swap portions. This exchange results in a genetic recombination of the parental genes, providing for genetic variation, the raw material for evolution.
Q. What are the few examples of the structural function of organic molecules? Ans. Organic molecules have a structural function as they are part of cell membranes, organ w
What are the risk factors of cataractogenesis? Risk Factors of Cataractogenesis: a. Hereditary b. Exposure to ultra violet radiation: The ultra violet radiation of 290
habitat, habit, cell wall chemistry, reason why cell wall like this of Archaebacteria , eubacteria,fungi,algae,bryophytes ,pteridophyes, gymnosperms , angiosperms..
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What is a population? A population is a set of individuals of the similar species found in a given place in a given time.
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