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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.
The different organs of the respiratory system Nostrils through which we inhale air in the nasal cavity Pharynx Larynx Trachea (wind pipe) Lungs - Bronchi,
what are the variations of the digestive system in animals? what musthave caused these variation
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In unilocular ovary with a single ovule tje placentation is??
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What are the events that mark the beginning and the end of the third interphase period? What happens in the cell in this period? The third interphase period is the G2. It star
Explain the Techniques of Culturing? In the last practical we learnt how to prepare culture media. This practical has been introduced to make you aware of the technique of sub-
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