Sex chromosomes were first discovered by:
A) McLung
B) Wilson and Stevens
C) C. B. Bridges
D) T.H. Morgan
Sex chromosomes were first discovered in:
A) Grasshoppers
B) Drosophila
C) Garden Pea
D) Maize
Wilson and Stevens (1905) discovered sex chromosomes in:
A) Grasshoppers
B) Melandrium
Sex chromosomes are also known as:
A) Autosomes
B) Lysosomes
C) Allosomes
D) Ribosomes
The genetic constitution of normal Drosophila female is:
A) XX
B) XY
C) XXY
D) XO
In Y chromosome of Melandrium, region II is known as:
A) Male suppression region
B) Male promoter region
C) Male fertility region
D) Pairing region
The genic balance theory of sex determination was proposed by:
A) McLung
B) Bridges
C) Morgan
D) Bateson and Punnett
The gene causing Hemophilia in man is inherited through:
A) Males
B) Females
C) Both
Sex linked genes are located on:
A) X-chromosomes
B) Y-chromosomes
C) Autosomes
D) All of the above

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