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How do genetic mutations influence biological diversity?
Too frequent or too extensive genetic mutations usually are deleterious for individuals and species. These mutations frequently cause important phenotypical changes or defects incompatible with the survival of the body and the continuity of the species
Though small genetic mutations that do not cause the appearing of lethal changes are continuously accumulated in the genetic patrimony of the species. These mutations slowly add to each other giving birth to small phenotypical changes in individuals and these small changes are exposed to the selective criticism of the environment (natural selection) and the more favorable for survival and reproduction are preserved (the remaider are eliminated as their carriers have difficulty in surviving and reproducing). In this manner a combined processes of accumulation of small mutations and of natural selection incorporate new features in the species and they may even lead to speciation (formation of new species) and promotion of biological diversity (Obviously only genetic mutations transmitted by cells that originate new individuals, in sexual or asexual reproduction, have evolutionary effect.)
feeding mechanism of man
Calcium deficiency (hypocalcicosis) Calcium deficiency or hypocalciosis is a sporadic condition occurring in a particular group of animals causing osteodystrophy. Aetiol
Sucrose is commonly used to preserve fruits why not glucose? Ans) Glucose is reactive due to its open-chain form having an aldehyde group.
DISORDER OF SKELETON AND JOINTS - 1 . Sprain - It involves a stretching or tearing of tendons or ligaments. 2. Arthritis - It is infalmation of joints.
Food Intolerances Food Intolerances: The intolerances of the patient for specific food items must be assessed. For example, milk may lead to diarrhoea in some people whil
C dna is made from a mature m rna of eukaryotic cell with the utilization of enzyme called as reverse transcriptase. Steps in c dna creation 1. m rna is made and purified f
#q1. If offspring exhibit a 3:1 phenotypic ratio, what are the genotypes of a parent?uestion..
Does the trend of the change in shape of the graph as temperature increases differ when a different gas is examined?
what is the function of the germinative zone
Q. Why are pteridophytes better adapted to dry land than bryophytes? Were pteridophytes always less abundant than phanerogamic plants? Although pteridophytes and bryophyt
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