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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.
Providing Critical Resources - Conservation of Wildlife Another way to improve the habitat of a threatened species is to determine which resource is limiting the population si
What are the reasons of Food Processing? The reasons for food processing may vary, but the main objectives are to: Preserve the nutritive quality of food by preventing th
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Role of Chemical Factors in Controlling Apical Dominance There were indications about the existence of plant hormones in the last part of 19th century. The plant hormones had
Q. Describe the pulmonary artery? The main pulmonary artery is seen on the PA view, as its left border forms the pulmonary bay. The right pulmonary artery runs horizontally to
what is respiratory system
The use and transfer of energy in all cells involves same compound, ATP. The letters ATP stand for chemical: a) Adenosine triphosphate b) Aluminum trioxide c) Atrophine t
Why is it important to study biology? By studying biology, you can create informed decisions on issues that impact you and society, like environmental issues, health, and tech
Q. Define Maxillofacial Prosthodontics? Dental implants are now been increasingly used for Maxillofacial Prosthodontics. Maxillofacial Prosthodontics involves the prosthetic re
Define Class Turbellaria - Flatworms ? Members of these two Classes are known as the flukes. Flukes are parasitic flatworms that inhabit tropical areas like Southeast Asia and
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