TS EAMCET Medical 10 May 2023 Shift 2 Paper

Study the following and pick up the incorrect statements
I. Y - chromosome of Drosophila lacks male determining factor.
II. Inactivation of one of the two X - chromosomes in females is known as lyonisation
III. Haemophilia −B is an autosomal genetic disorder
IV. Turner's syndrome is an example for trisomy.