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Question
The chromosomal theory of heredity was first proposed by ______.
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Solution
The chromosomal theory of heredity was first proposed by Beadle and Tatum.
Explanation:
The chromosomal theory of heredity was first proposed by Walter S. Sutton and Theodor Boveri in 1903. They independently observed that chromosomes behave in a manner similar to Mendelian factors (genes), noting their pairing, segregation during meiosis, and independent assortment. This led them to postulate that genes are located on chromosomes, and it is the chromosomes that segregate and assort independently during meiosis, thus explaining Mendel’s laws on a cellular basis.
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