April 30, 2020 – Self Study for Anthropology

Anthropology

9.5 biological basis of racial classification, racial differentiation and race crossing in man.

Self Study for UPSC Posted on April 30, 2020May 14, 2020

Racial classification Racial classification is given to a group of individuals, who share a certain number of anthropological traits, which is necessary such that they are not confused with others. There are two aspects to distinguish people based on phenotypic and genotypic traits. Phenotypic Traits: Phenotypic traits are those physical characteristics of an individual, which […]

Anthropology I

I.9.5 Racial criteria, racial traits in relation to heredity and environment;

Self Study for UPSC Posted on April 30, 2020June 26, 2021

Race is a classification system used to categorize humans on various aspects ,Dobzhansky defined race as a group of population which are reproductively isolated to that extent that exchange of genes is absent or so slow between them. The characters upon which races are distinguished- must be non-adaptive hence least influenced by environmental factors. must […]

Anthropology

I.9.5 Biological basis of morphological variation of non-metric and metric characters.

Self Study for UPSC Posted on April 30, 2020May 14, 2020

Metric characters They are labeled as metric because they can be measured in incremental units. They are simply recorded through various indices. These can be exactly measured based on standardized methods, like stature, head length, head breadth and other body measurements. Cephalic Index (C.l.) Cranial Index (C.l.) Facial Index Nasal index Stature Non metric characters […]

Anthropology I

I.9.5 Race and racism,

Self Study for UPSC Posted on April 30, 2020November 23, 2020

Previous Year Questions: Differentiate between Race and Racism. What are three major races of the world? Give important biological criteria used frequently for such a classification.(15Marks 2013) Discuss race Crossing in humans with suitable examples (20Marks 2012) Is Race a valid concept? Critically assess the relevance of racial classification in the Indian Context. (30 Marks […]

Anthropology I

I.9.4.(c) Autosomal aberrations – Down syndrome, Patau, Edward and Cri-duchat syndromes.

Self Study for UPSC Posted on April 30, 2020June 13, 2020

Down syndrome/ Trisomy 21 Down syndrome is a chromosome disorder caused by an extra chromosome 21 that results in intellectual disability and physical abnormalities. The most common trisomy in a newborn is trisomy 21 (three copies of chromosome 21, which is the smallest human chromosome). Trisomy 21 causes about 95% of the cases of Down […]