MCQ’S ON SEX DETERMINATION
1. In an entity with genetic composition AA+XXY such as Drosophila will be a normal female. In the case of mammals, it will be?
(a) Turner
(b) Klinefelter
(c) Normal female
(d) Normal male
Answer: (b)
2. ______________ discovered XY sex chromosomes
(a) M J D White
(b) Nettil Stevans
(c) R Brown
(d) Mendel
Answer: (b)
3. In this plant, sex determination was first studied
(a) Mirabilis
(b) Melandrium
(c) Datura
(d) Rumex
Answer: (b)
4. This technique can be used to detect the chromosomal abnormality of an unborn baby
(a) Tissue culture
(b) Ultrasound
(c) CAT Scanning
(d) Amniocentesis
Answer: (d)
5. A foetus’ determination of gender is dependent on
(a) mother’s age
(b) father’s health
(c) egg’s nature
(d) sperm’s nature
Answer: (d)
6. This number of Barr bodies are found in a female with XXXX chromosomes
(a) Four
(b) Three
(c) Two
(d) One
Answer: (b)
7. If a boy has sexual characters of that of a girl, its genotype would be
(a) XYY
(b) XO
(c) XXY
(d) XXX
Answer: (c)
8. Theory of linkage was put forward by
(a) De Vries
(b) Sutton
(c) Bateson and Punnet
(d) Morgan
Answer: (d)
9. The chromosomes accounted for sex determination are referred to as
(a) Heterosis
(b) Multiple alleles
(c) Allosomes
(d) Autosomes
Answer: (c)
10. The condition of Free martin is observed in
(a) Frog
(b) Rabbit
(c) Goat/sheep etc
(d) Man
Answer: (c)
