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While explaining the concept of natural selection, we have stressed the fact that natural selection is synonymous with differential or non-random reproduction. Natural selection aims at the multiplication of those genes that contribute to the reproductive success of the population. In other words, if any gene does not in any way contribute to the reproductive success of the species, the chances are it may be eliminated from the population. Certain critics of Darwin pointed out that the common altruistic behaviour of individuals provided evidence contrary to the theory of natural selection, Whether it is so or not, will be discussed in the following subsections.
Fate Map - Gastrulation in Chick All the three main germinal layers (ectoderm, mesoderm, endoderm) are made from cells initially located in the epiblast in area pellucida, hen
What is the structure that maintains identical chromatids bound? Ans) The structure that handles identical chromatids bound is the centromere.
Explain the Primary Root Growth? Primary Growth in Roots : Roots grow down and through the soil by adding new cells at the tip of the root (called the root tip). There is a
What are the multiple alleles? is there dominance in multiple alleles? The Multiple alleles is the phenomenon in which the similar gene has more than two different alleles (in
Define Clinical Assessment For Vitamin A? Clinical features of deficiency occur as ocular and extra ocular lesions. Ocular lesions affect the posterior segment of the eye init
Factors that affects Oxygen Dissociation Curves Oxygen dissociation curve for a sample of blood is affected by several factors. The most important of them are: Te
Respiratory System - Developmental Changes after Birth The new-born's lungs are collapsed and need powerful breaths to inflate them; airways too are small, offering remarkable
Explain about Suspensions Sol is a colloidal system, in which solid particles are dispersed in a liquid. When the particles of a solid are separated into large aggregates of pa
Q. Can you explain Bacillus Cereus Poisoning? Ans. Bacillus cereus poisoning is caused by the organism which is a large (3-5 pm long .and 1-4 pm wide), gram po%tive,
What are the factors to an actual shift in the supply curve? Factors which cause an actual shift in the supply curve are described in below: When prices rise or fall this wo
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