A rule specifying that a widower should marry the sister of his deceased wife. This is usually favored by their respective parents because it continues the bond between their families. Where polygyny exists, an "anticipatory sororate" is often practiced. That is to say, there is a degree of sexual permissiveness allowed between a husband and his wife's younger sister in anticipation of a presumed future marriage between them.
Question: what are the groups practicing sororate marriage? group o inuit in canada who is practicing the sororate marriage
Answer: Sororate marriage is the sociological custom of a man marrying (or engaging in sexual activity) with his wife's sister (rarely with her brother), usually after the wife is dead or has proved infertile.
From an anthropological standpoint, this practice strengthens the ties between both groups (the wife's family or clan and the husband's) and preserves the contract between the two to provide children and continue the alliance.
The Inuit people of in northern Alaska, Canada and Greenland commonly engage in this type of behavior.
......................................…
The Inuits of northern Canada, practise sororate marriage, where if a woman dies, her husband will marry her sister or another close female relative.
http://jmm.aaa.net.au/articles/17060.htm
