An isolated population with equal number of blue-eyed and brown eyed individuals was decimated earthquake. Only a few brown eyed individuals survived to form next generation. the change in gene pool is ... .. [ JKCET 2012]
40%
a) Hardy - Weinberg equilibrium
20%
b) Blocked gene flow
20%
c) Founder effect
20%
d) Bottleneck effect
Q.3.
Which one is not vestigial in humans ... .. [ MPPMT 1994 ]
50%
a) Tail vertebrae
0%
b) Vermiform appendix
50%
c) Muscles of pinnae
0%
d) Malleus
Q.4.
Theory of mutation by de Vries considers that ... .. [ CPMT 2009]
33%
a) Only small mutation take part in developing variations
33%
b) Only large mutation take part in developing variations
33%
c) Both small and large mutations cause variations
0%
d) None of the above
Q.5.
Coacervates belong to the category of ... ... [ Pb PMT 2005 ]
33%
a) Protozoans
0%
b) Molecular aggregates
33%
c) Molecular aggregates surrounded by lipid membrane
33%
d) Cyanobacteria
Q.6.
Ontogeny recapitulates phylogeny. This is ... ... [ JKCMEE 2008 ]
33%
a) Hardy Weinberg law
0%
b) Pauling law
33%
c) Biogenetic law
33%
d) Thomas law
Q.7.
What is incorrect for evolution? ... .. [ Odisha 2002 ]
33%
a) Fossils provide important information
67%
b) Early development stages of higher animals are similar
0%
c) Fore limbs of cows and wings of birds are homologous
0%
d) Variations among individuals are not important in natural selection
Q.8.
Mammals like Whale, Dolphin, Bat, Monkey and Horse have some common characters but also show conspicuous differences. this is due to phenomenon of ... ... [ MPPMT 2004 ]
50%
a) Divergence
25%
b) Convergence
0%
c) Genetic drift
25%
d) Normalisation
Q.9.
Hybrid sterility is found in ... ... [ Kerals 2000 ]
40%
a) Horse
0%
b) Hinny
60%
c) Lion
0%
d) Crocodile
Q.10.
Balancing selection is connected with successful reproduction of ... .. [ DPMT 2011]
50%
a) Homozygous recessives
0%
b) Homozygous dominants
0%
c) Heterozygous individuals
50%
d) All the above
Q.11.
Analogous organs are a result of ... .. [ HPPMT 2011]
67%
a) Divergent evolution
0%
b) Genetic drift
33%
c) Convergent evolution
0%
d) Divergent evolution
Q.12.
Possibility of occurrence of coal in an area is determined by study of ... ... [ BHU 2002 ]
33%
a) Microfossils
33%
b) Ecology
0%
c) Economic Botany
33%
d) Mining contents
Q.13.
Lamarck’s theory of evolution is known as ... .. [ AFMC 1997]
67%
a) Natural selection
33%
b) Inheritance of acquired characters
0%
c) Survival of the fittest
0%
d) Mutation theory
Q.14.
Which is sequenced during study of phylogeny? ... ... [ CBSE 2002 ]