Correct Answer:- Option-B
Question9:-The custom by which a widower marmies the sisters of the deceased wife ....
A:-Sororate
B:-Levirate
C:-Polygyny
D:-Plural marriage
Correct Answer:- Option-A
Question10:-Natural selection accounts for
A:-Changes over a period of time
B:-Progressive adaption of organisms to environment
C:-The production of differences recognized by systematics
D:-All of the above
Correct Answer:- Option-D
Question11:-Who among....
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