Answers

2016-01-07T14:13:32+05:30
Take apart the two words "heredity" and "vehicles". Heredity means the passing of physical or mental characteristics whilst vehicle is a transportation device. Chromosomes carry genetic information through genes. Therefore they are the method where characteristics are transported (usually by procreation).
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2016-01-07T14:18:30+05:30
Becoz they r responsible for inheritence of genes
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