1
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
The lac Operon consists of -
A
Three regulatory genes and three structure genes
B
Four regulatory genes only
C
Two regulatory genes and two structural genes
D
One regulatory gene and three structural genes
2
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join -
A
One nucleotide with another nucleotide
B
One nitrogenous base with pentose sugar
C
One nucleoside with another nucleoside
D
One DNA strand with the other DNA strand
3
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
4
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
A cross in which an organism showing a dominant phenotype in crossed with the recessive parent in order to know its genotype is called -
A
Dihybrid cross
B
Back cross
C
Monohybrid cross
D
Test cross
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