81.
Which of the following glands is both endocrine and exocrine?

83.
Haemophilia is a hereditary disease carried by

84.
The sex of a newborn baby is determined by the chromosome inherited from

85.
The chromosome number 2n is known as

86.
In 1910, who proved the idea of W.S.Sutton that genes are located on chromosomes?

87.
Different forms of genes are called

89.
Which nitrogenous base is not found in dna?

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