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Is crossing over important for the diversity of biological evolution?
The Sexual reproduction and the recombination of linked genes (crossing over) are, along with mutations, the main instruments of biological variability. The Sexual reproduction allows many combinations between genes situated in different chromosomes. The Crossing over, however, is the only means to provide recombination of alleles located in a same chromosome. The Crossing over probably emerged and has been maintained by the evolution because of its importance to biological diversity.
In the living condition (found in sea) you would be able to observe the following features in radiolarians: The cytoplasm is divided by a perforated and chitinous metnbrane into
How is energy transferred along a food chain? The energy flux beside a food chain is always unidirectional, from the producers to the decomposers.
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What are Antifoaming Agents In food industries, undesirable foams may be formed such as in concentration of fruit juices, coffee extracts, vegetable oils and syrups or in ferm
Risk analysis - Definition of Hazard Hazard : A biological, chemical or physical agent in or property of food that might be have an adverse health effect.
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