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
Study the pedigree chart of a certain family given below and select the correct conculusion which can be drawn for the character – AIPMT 2010 Mains Biology - Principles of Inheritance and Variation Question 122 English
A
The trait under study could not be colourblindness
B
The female parent is heterozygous
C
The parents could not have had a normal daughter for this character
D
The male parent is homozygous dominant
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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