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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.
BON E MARROW TRANSPLANT - It is transplanted to treat leukemia. Here, graft itself causes immune rejection. Before transplant, the recipient's bone marrow cells, incl
R e troviral method: A retrovirus is a virus that carries its genetic material in the form of RNA rather than DNA. In this method retroviruses are used as vectors to transf
Mitral valve prolapse (MVP) has emerged as a prominent, predisposing structural cardiac abnormality and in adults accounts for 7 to 30 per cent of NVE in cases not related to drug
Collect images of heterotrophs and make a Powerpoint Presentation on them
Define Body weight as a determinant of nutrient requirements? Requirements are considered to be a function of body weight for individuals who are not overweight. However, for s
Why are trees green? It is because leaves have chloroplasts, which have a green pigment, which also have chlorophyll in them. They are used for conducting photosynthesis, which
The Features of Retrograde Peri-Implantitis include: - Periapical Bone loss without gingival inflammation. - Microflora consisting mainly of streptococci and nonmotile organ
Population Regulation The number of individuals in a natural population varies with time. If the size of a population declines too drastically due to some reason, it may becom
what is exonephric
Admission to the Hospital The philosophy of childcare, whether in the home, hospital, or other community agency, should be consistently one of concern and support for the
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