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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 the energy efficiency of photosynthesis? a) What area is occupied by each molecule? b) Calculate the molecular absorption cross section in units of A 2 A cr
What is the effect of physical activity on health? The Surgeon General's report (1996) summarizes the effects of physical activity on health as follows. Overall Mortality: H
Explain Precautions for Estimation of Sucrose by Fehling Soxhlet Method? 1. Maintain proper temperature of the water bath for complete hydrolysis. 2. Add distilled water to
What are the main events of the final mitotic period? The final mitotic phase is telophase. In telophase the following events happens: decondensation of chromosomes, every set
How did muir's impression of man's relationship with nature differ from Susan Fenimore coopers? And How did Gifford Pinchot view nature?
Q. Is there chloroplasts in cyanobacteria? In cyanobacteria there is no chloroplast and the chlorophyll layers are dispersed in cytosol.
What is Active site Active site : The site on the surface of an enzyme to which substrate or substrates bind.
Explain Procedure for Isolation of Pure Culture? Now carry out the exercise following the steps enumerated herewith. 1. Label the name of the organism on the bottom of the p
AGA R - AGAR It is cell wall mucopolysaccharide of some red algae (e.g. Gelidium, Gelidiella, Gracillaria). Agar is used as culture medium, thickener, stabilizer and as lax
SPECIATION - Origin of new species: An isolated population of a species independently develops different types of mutations. The later accumulate in its gene pool. Afte
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