A) Du Praw
B) Balbiani
C) Hemming
D) Ruckert
Correct Answer: B
Solution :
Balbiani first observed these chromosomes in the salivary glands of Midge chironomus in 1881. It was later observed that these chromosomes are very common in salivary glands of insects. Also, reported in gut epithelium, Malpighian tubules, etc. They are very long and thick with 1000-4000 units of chromatids.
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