Revision summary
Descent: who belongs across generations (patriliny, matriliny, bilateral). Alliance: who marries whom and how groups exchange spouses (Levi-Strauss, Dumont). North Indian lineage-plus-exogamy versus South Indian cross-cousin prescription illustrate the cut. Caste endogamy is alliance at jati level. Household in the Census is not the descent group.
Model answer
Copper italics in this answer — like this — are the key facts. Each one is unpacked in the Facts & figures rail.
Introduction
Descent rules say who belongs to a kin group across generations. Alliance rules say who may or must marry whom, and how groups exchange spouses. They interlock, but they answer different questions.
Body
Descent
- Unilineal descent traces through father (patriliny) or mother (matriliny). Cognatic and bilateral systems count both.
- Descent allocates membership, often property, ancestor worship, and jural identity.
- Illustration: a North Indian patrilineage (gotra, kul) as a descent corporation; Khasi matriliny as descent through women.
Alliance
- Claude Levi-Strauss treated the incest taboo and the exchange of spouses as the elementary structure of kinship.
- Positive rules (prescriptive cross-cousin marriage) and negative rules (whom one must not marry) organise alliance.
- Louis Dumont read South Indian kinship as alliance between groups, not only as a tree of descent.
- Illustration: Dravidian cross-cousin marriage as repeating alliance; North Indian sapinda and village exogamy as negative alliance with strong patrilineal descent.
Difference
- Descent is filiation through time. Alliance is marriage between groups in a generation and the next.
- A society can have strong descent and weak prescription, or strong alliance with shallow descent names.
- Caste endogamy is an alliance rule at a higher level: marry inside the jati, outside the lineage.
Mead and the household
- George Herbert Mead’s family as the first game of roles is socialisation, not a substitute for these jural rules.
- Census household is not the lineage. Household and kin group must not be collapsed.
Flow diagram
flowchart TD DES[Descent membership] --> TIME[Across generations] ALL[Alliance marriage] --> EX[Exchange of spouses] DES --> KIN[Kinship system] ALL[ALL] --> KIN[KIN]
Conclusion
Descent assigns membership through parentage. Alliance assigns marriage relations among groups. Levi-Strauss and Dumont centre exchange; lineage theory centres the corporation. Indian North–South contrasts illustrate the difference without making either region a pure type.
Quick related
Students also ask
-
Does descent determine marriage?
It constrains it. Alliance theory asks for the positive pattern of exchange, not only the tree.
-
Is gotra descent or alliance?
Gotra is a descent category that also works as a negative alliance rule: do not marry inside it.
Same topic · past papers
UPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.
-
2020 · Q1(c) · Sociology GS 1 · 10 marks
Methodology is a system of rules, principles and procedures, which forms. scientific investigation. Comment.
More from this topic
Q4(a) · UPSC Mains 2025 · Sociology GS 1 · 20 marks · Solution
Give an account of the recent trends of marriage in the Indian context. How are these different from traditional practices?
Systems of Kinship
Traditional Indian marriage was typically early, arranged, caste-endogamous and family-led. Regional and religious diversity always qualified the textbook joint-family model. Recent trends include later age, schooling, online matching, dual earners and more public exit options. Endogamy and parental ratification persist inside modern forms such as matrimonial apps. Inter-caste, live-in and queer unions are visible but still minority or legally incomplete. The story is hybridisation of alliance, not a clean replacement by Western companionate marriage.
Q8(a) · UPSC Mains 2021 · Sociology GS 1 · 20 marks · Solution
Discuss the changing nature of kinship relations in the contemporary world.
Systems of Kinship
Kinship organises descent, marriage, and care; it is stretching, not dying. Alliance and caste endogamy persist beside delayed marriage and chosen intimacy. Migration, IVF, and law split biological and social parenthood. Census and NFHS show mixed households. COVID made kin the shock-absorber of care and shelter.
Q7(a) · UPSC Mains 2021 · Sociology GS 1 · 20 marks · Solution
Explain how the pattern of patriarchy is being altered in a family and at the workplace in the present context.
Systems of Kinship
Patriarchy is male dominance across household and work; it can change form. Family: more dual earning and law, still care, honour, and NFHS violence. Workplace: some professions and SHGs, still informal segregation. WFH and lockdown reorganised rather than ended the double day. Walby’s public patriarchy is the best short map.