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Why is meiosis important for the maintenance of the normal quantity of chromosomes of a species with sexual reproduction?
A reduction to a half of the maximum normal quantity of chromosomes is mandatory in some phase of the life cycle of a species that reproduces sexually. If that could not occur in every generation, whenever a zygote is created by fusion of gametes there would be duplication in the quantity of chromosomes in a geometric progression.
What are three basic phases of PCR? Which phase of these three phases is used for analysis for the end-point PCR? Why? Which phase is used for analysis for the quantitative real-t
What is the difference among sexual spores and gametes? Do humans present sexual spores or gametes? Sexual spores are structures formed from meiosis with ploidy (number of chro
Define requirements of Sodium during pregnancy period? As you know, sodium plays a role in fluid balance. Sodium metabolism is altered during pregnancy under the stimulus of a
Assortment is a method in which the meiosis produces new combinations of the genetic information. The paternal and maternal chromosomes line up randomly during the process of syna
Q. What is the kind of circulatory system present in arthropods? Do these animals have respiratory pigments and heart? In arthropods the respiratory system is open (lacunar). B
K e to s i s It is also known as acetonemia in bovines or pregnancy toxaemia in sheep and is associated with ketonemia, ketonuria and low blood glucose. E t iol
Foetal maceration and mummification Foetal mummification occurs when the foetus dies in the uterus in the absence of air and bacterial contamination and the cervix remains tig
Requirement and Recommended Dietary Allowance (RDA) for Vitamin A? Recommendations for adequate vitamin A intake based on the amounts needed to correct night blindness among vi
Define the Skin Capillary Fragility Test? One of the earliest signs of ascorbic acid deficiency is the fragility of the capillaries. Capillary fragility is measured by applyin
physical properties of protoplasm
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