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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.
Q. What do you mean by Chromosome Number? We are generally aware that the number of chromosomes in each cell of all individuals of a single species is constant. ,It is also est
why is it known as middle man
Dot blot is the technique for measuring the amount of one perticular DNA or RNA in the highly complex mixture. The samples are spotted onto the hybridization membrane (like nitroc
Food chain is the simplest representation of energy flow in the community. At the base is energy stored in the plants, which are eaten by the small organisms, which in turn are ea
Primary effects 1. Nuclear contamination 2. Biological contamination 3. Chemical contamination 4. Destruction of infrastructure facilities. 5.
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