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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. Applications of genetic engineering? Applications of genetic engineering in different fields are: • Agriculture: Crops having larger yields, drought -and disease -resis
taxonomy of phylum echinodermata
Define tuberculosis Tuberculosis (TB) is still a problem in the United States, even though the incidence continues to decline in most of the country. Treatment of TB can be div
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Define the term - cerebral arteriosclerosis An embolism can be a blood clot, a bubble of air, a deposit of oil or fat, or a small mass of cells detached from a tumor. Reduction
what are enzymes?
Vibriosis/campylobacteriosis This is genital disease of cattle and sheep. The causal organism Campylobacter fetus is a gram negative, curved or spiral shaped bacteria having s
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