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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.
A triglyceride TG, TAG, triacylglycerol or triacylglyceride is an ester derivative from glycerol and three fatty acids. There are various triglycerides: depending on the oil source
Are the xylem and the phloem made of living cells? The cells that constitute the xylem ducts are dead cells killed by lignin deposition. The cells of the phloem are living
Situation in which a closed loop negative feedback system is converted to an open loop system? A. A disease that destroys all the adenylyl cyclase and all the cAMP in the
#question.why obelia is considered of special interest in zoology.
Q. What is the DNA vaccine? The DNA vaccination or is a vaccination technology based on genetic engineering. In DNA vaccine a recombinant plasmid (vector) containing the gene o
Control of Pollution We have seen that pollution affects human health, 'vegetation, crop yield, trees, fisheries, forests, buildings, archaeological monuments, tourism. These
Explain about the Soil morphology Soil morphology is the description of the soil body and its general characteristics. The morphology of the soil is expressed by number, kinds
6. What is the function of the myelin sheath? Do all axons present a myelin sheath?
Define Natural Disasters - Public Nutrition? Disaster prone settings also shape the intensity and prevalence of food insecurity, these consist of poor who are exposed to recurr
Manifestations of anemia that are directly due to the diminished oxygen-carrying capacity of hemoglobin include: Answer A. pale skin. B. bleeding. C. bone pain. D. fatigue.
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