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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.
what is usually regarded as evidence that photosynthesis has occurred in a plant?
How do the cheek and onion cells visually resemble one another, and why are shapes of squamous cells so different than the onion cells?
Elaborate the following term in detail - Macronucleus. One of two types of dimorphic nuclei found in ciliate protozoans. Macronucleus contains multiple copies of genome (polypl
explain digestion in protozoans
Q. How is fecundation done in insects (internal or external)? Is there copulation between insects? Fecundation in insects is internal, with copulation.
MID BRAIN - Optics lobes 4 in number ( Corpora Quadrizemmini ) in frog corpora bizemmini . Solid, optocoel is absent. 2 superior coculi and 2 inferior coculi are present.
Q. Prevention of Outbreak in salmonellosis? Prevention of Outbreak: The control of food borne salmonella infection requires the following: 1. Preventing food contamination
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Define Transport and uptake of Zinc by Cells? After absorption, zinc is bound to albumin and transported to the liver. In liver, it is concentrated and then transported to diff
Performance Evaluation Cake batter aeration can be affected by the plasticity, consistency, emulsification, bake stock formulation and other fats and oil properties. Creamin
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