1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following conditions correctly describes the manner of determining the sex ?
A
XO condition in humans as found in Turner Syndrome, determines female sex
B
XO type of sex chromosomes determine male sex in grasshopper
C
Homozygous sex chromosomes (ZZ) determine female sex in Birds
D
Homozygous sex chromosomes (XX) produce male in Drosophila
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
When two unrelated individuals or lines are crossed, the per romance of F1 hybrid is often superior to both parents. This phenomenon is called :
A
Sphcing
B
Transformation
C
Heterosis
D
Metamorphosis
3
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible -
A
five
B
four
C
three
D
six
4
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
In antirrhinum two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization ? Red flower colour is determined by RR, and White by rr genes -
A
rrrr
B
rr
C
Rr
D
RR
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