UGC Approved Journal no 63975(19)

ISSN: 2349-5162 | ESTD Year : 2014
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Published in:

Volume 9 Issue 7
July-2022
eISSN: 2349-5162

UGC and ISSN approved 7.95 impact factor UGC Approved Journal no 63975

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Published Paper ID:
JETIR2207665


Registration ID:
500530

Page Number

g462-g469

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Title

STUDY OF GENETIC VARIABILITY IN TRIBAL POPULATION OF KISHANGANJ DISTRICT (BIHAR, INDIA) BASED ON PHENYLTHIOCARBAMIDE (PTC) TASTE SENSITIVITY

Abstract

The genetic variability on the basis of genetic marker phenylthiocarbamide (PTC) was studied in three demes selected from Santhal, Munda and Oraon tribal populations of district Kishanganj of Bihar. The marker divides populations in taste sensitive controlled by dominant gene and taste blind controlled by recessive gene. The identification of population as taster and non-taster is based on the method of Harris and Kalmus. The study was based on total sample size 322 randomly selected from three administrative blocks Kishanganj, Bahadurganj and Pothia; in which 222 were Santhal, 50 were Munda and 50 were Oraon. The gene and allelic frequencies were determined by Hardy Weinberg Law (HWL) and the gene diversity indexes were calculated on the method as suggested by Nei. The threshold level of PTC does not show any variation among demes and in between gender but the allelic frequency of dominant and recessive genes represent significant variations among three populations considered in present study. The dominant gene frequency in Santhal, Munda and Oraon is 51%, 28% and 37% respectively. In all these three demes the heterozygous dominant is more prevalent (50 % in Santhal, 40% in Munda and 47% in Oraon) and suggests that both taster and non-taster alleles have survivorship advantage in existing environmental conditions of the population. Santhal represents allelic equilibrium of both dominant and recessive genes, since it is a Mendelian trait and represent 1.04: 2: 0.96 genotypic ratios with corresponding allelic frequencies as 26%, 50% and 24%. The findings suggest normal pattern of allelic distribution and balancing selection of genes. Munda and Oraon represent genotypic ratio as 0.32 : 1.6 : 2.28 and 0.52 : 1.88 : 1.6 with allelic frequencies as 8%, 40% and 52% and 13%, 47% and 40% respectively. The findings suggest that the distribution of homozygous dominant is skewed in both populations and non-taster allele is fixed. The probable causes are discussed in paper but it requires more extensive research for final conclusion. The different parameters of gene diversity were calculated as HT = 0.4738, HS = 0.4557, DST = 0.0181 and GST = 0.0383.

Key Words

Allelic frequency, variability, selection, PTC sensitivity, Tribal population, Kishanganj.

Cite This Article

"STUDY OF GENETIC VARIABILITY IN TRIBAL POPULATION OF KISHANGANJ DISTRICT (BIHAR, INDIA) BASED ON PHENYLTHIOCARBAMIDE (PTC) TASTE SENSITIVITY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 7, page no.g462-g469, July-2022, Available :http://www.jetir.org/papers/JETIR2207665.pdf

ISSN


2349-5162 | Impact Factor 7.95 Calculate by Google Scholar

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 7.95 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Cite This Article

"STUDY OF GENETIC VARIABILITY IN TRIBAL POPULATION OF KISHANGANJ DISTRICT (BIHAR, INDIA) BASED ON PHENYLTHIOCARBAMIDE (PTC) TASTE SENSITIVITY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 7, page no. ppg462-g469, July-2022, Available at : http://www.jetir.org/papers/JETIR2207665.pdf

Publication Details

Published Paper ID: JETIR2207665
Registration ID: 500530
Published In: Volume 9 | Issue 7 | Year July-2022
DOI (Digital Object Identifier): http://doi.one/10.1729/Journal.31091
Page No: g462-g469
Country: SINGHESWAR, MADHEPURA, BIHAR, India .
Area: Biological Science
ISSN Number: 2349-5162
Publisher: IJ Publication


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