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The Study Of Genetic Genetics

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(anthropometric, morphological, dermatoglyphic, biochemical, molecular etc. traits) in terms of phenotype frequencies and mean values, respectively. Such exact and comprehensive descriptions are the basic requirements for the understanding of genetic variation in man and thus for the analysis of the various evolutionary factors, which caused this variation in the course of time (Bhasin and Walter, 2007). The association between gene frequencies and environmental factors has been made for a number of polymorphic loci (Flint et al, 1986; Flatz. 1987). It seems that this type of associative study is an effective way to make inference about selective mechanisms, which could be done by having data on the distribution of gene frequencies among various populations provided the population is endogamous.
The study of human population genetics deals with the genetic variation and the processes that influence thesevariation within and among the populations. The changes in the genetic makeup of a population over time, is usually measured in terms of allele frequencies, which is taken as equivalent to evolutionary change. Because of this reason, population genetics provides the groundwork for scientists understanding the evolutionary process, specially microevolution, or changes occurring within one or different populations over a time span. The existing of sufficient variation even at a small number of genetic loci can helpful to study population variations existing among or within populations. But the study of distribution of a large number of polymorphic alleles is more useful to study the various aspects of population dynamics (Kumari et al, 2013).
Gene frequency data are very useful f...

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..., Vasya (business class) and Sudra (menial labour class). In addition, there are several religious communities, who practice different religions, like Islam, Jainism, Judaism, Christianity, Sikhism and Buddhism. The language spoken by non-tribals predominantly belongs to the Indo-Aryan and Dravidian families (Basu et al, 2003). Caste system in India has its origin in verna system with its language, state and religious base, hence study of caste differentiation can be undertaken with these three points of views (Karve, 1961).
The vast spectrum of genetic diversity in Indian populations is a subject of great interest to population geneticists and evolutionary biologists. Studies based on morphological, classical genetic marker data show greater diversity among Indian populations (Bhasin and Walter 2001), comparable to global populations. The
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