Sex Determination MCQ Advance Level

Sex Determination MCQ Advance Level

Dear Readers,

Zoology is considered to be one of the scoring section. If prepared thoroughly, Zoology can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. For determination of sex, body cells are taken from

•  Buccal epithelium
•  Buccal epithelium and root of hair
•  Gonads
•  Root of hairs

Buccal epithelium and root of hair

Q2. Gynandromorphs develop in Drosophila when the two cells in the two-celled proembryo will have one of the following chromosomal sets

•  2A + XX in one cell and 2A + X in the other
•  2A + X in both the cells
•  2A + XXX in both the cells
•  All of the above

2A + XX in one cell and 2A + X in the other

Q3. A family has five girls and no son, probability of son as the 6th child will be

•  50%
•  75%
•  Full
•  No chance

50%

Q4. Loss of a X chromosome in a particular cell during its development, results into

•  Diploid individual
•  Triploid individual
•  Gynandromorphs
•  (a) and (b) both

Gynandromorphs

Q5. The male of grasshoppers and moths posses two sets of autosomes and

•  X and Y chromosomes
•  Only X chromosome
•  Only Y chromosome
•  Neither X nor Y chromosome

Only X chromosome

Q6. Mule is an offspring of

•  Male and female donkey
•  Cow and ox
•  Male ass and mare
•  Male horse and female ass

Male ass and mare

Q7. Animal which remains male initially, then changes to female (Tapeworm proglottides) is called

•  Protandrous
•  Apomixis
•  Profixation
•  None of the above

Protandrous

Q8. In melandrium the sex determination type is

•  XX-XY type
•  XX-XO type
•  ZZ-ZW type
•  XY-XO type

XX-XY type

Q9. In human beings XX-genotype is

•  Always female
•  Can be male or female
•  Always male
•  Commonly female with 5 per lakh being male.

Commonly female with 5 per lakh being male.

Q10. Frequency of XY-genotype being female in human beings is

•  1.0%
•  0.1%
•  0.001%
•  0.00001%

0.001%