If Mendel might have studied 7 pairs of characters in a plant with 12 chromosomes instead of 14 then:

AA Bb Cc genotypes form how many types of gametes?
1.  4
2.  8
3.  2
4.  6

If a female having gene for haemophilia and colour-blindness on one X-chromosome marries a normal male, then what are the chances in their offspring?
1. 50% sons diseased and 50% normal
2. All normal offspring
3. 100% daughters are carrier
4. 100% sons diseased

First child of a normal male and female is albino, what are the chances of second child being albino:
1.  25%
2.  50%
3.  75%
4.  100%

Point mutation is induced by:
1. Adenine
2.  Guanine
3.  3-cytosine
4.  5-bromouracil

Reason for trisomy in Down's syndrome is:
1.  Non-disjunction during sperm formation
2.  Non-disjunction during egg formation
3.  Non-disjunction at the time of egg or sperm formation
4.  Addition of one extra chromosome during mitosis

Multivalent chromosome is formed by:
1.  Inversion
2.  Deletion
3.  Reciprocal translocation
4.  Point mutation

A normal leaf cell has how many genomes?
1.   1
2.   2
3.   3
4.   4

Mental retardation in man occurs due to:
1. Loss of one X chromosome
2. Addition of one X chromosome
3. Slight growth in Y
4. Overgrowth in Y

ABO blood group has:
1.  Two codominant and one recessive allele
2.  Two codominant and two recessive allele
3.  Two incompletely dominant genes
4.  Two pseudo alleles