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Natural selection can therefore mean differential reproduction among members of the sarne gene pool. We earlier said that selection would promote those alleles that give rise to phenotypes that are better adapted to a given environment. In other words, the frequencies of 'such alleles would tend to increase and those of ill-adapted ones would tend to decrease. What we are sayingis that natural selection is a matter of changes in gene frequencies. Differential reproduction has a dual role to perform. One it leads to or maintains adaptations and therefore determines whether individuals of a population or species will survive; and two, it is a process which determines what changes will occur in the frequencies of alleles in a gene pool of sexually reproducing individuals.
The major hazards encountered in the biological lab work are diseases like infections and allergies which are caused by handling live animals. dissections, plant and animal tissues
What is sustainability? Sustainability is the ability to meet human needsin a way that will allow a human population to survive indefinitely.
what is the process of nitrogen fixation in soil by bacteria
Q What is the molecular composition of hemoglobin? Does the functionality of hemoglobin as a protein depend upon its tertiary or upon its quaternary structure? Hemoglobi
Explain Generation of sound in MVP? Generation of sound in MVP: These are generated due to sudden tensing of redundant leaflets and elongated of chordae tendinae. Interventions
The need to replace missing teeth has haunted humans for time immemorial. Since antiquity man has attempted to solve the problems associated with failing dentition. The goal of mod
TYPE S OF NEURONS - The neurons are classified on the basis of their structure and function. (A) On the basis of the structure, the neurons are of four types.
Increase in cardio-thoracic ratio is a relatively specific indicator of left ventricular end-diastolic volume. Left atrial enlargement is seen as double density shadow, lifting up
Q. Common symptoms linked to lactose intolerance? Common symptoms linked to lactose intolerance include: 1. Anorexia and nausea. 2. Intestinal distension 3. Abdominal
International organization and zoonoses In 1962, the Food and Agriculture Organization and the World Health Organization created the Codex Alimentarius Commission (Codex) to e
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