Q. No.Sudden heritable changes are called
1. Linkages
2. Mutations
3. Recombinations
4. Natural selection
The "Use and Disuse" principal or "Theory of lnheritance of Acquired Characters" of evolution was proposed by
1. Hugo de Vries
2. Weismann
3. Lamarck
4. Darwin
Evolution of DDT resistant mosquito is best explained by which category of natural selection?
1 A
2 B
3 C
4 D
An example of process of evolution of different species in a given geographical area starting from a common point and radiating to other areas of geography can be
| 1. | Origin of Numbat, Phascolarctos, Flying phalanger, Tasmanian wolf, Spotted cuscus from a primitive metatherian |
| 2. | Origin of Eohippus, Mesohippus, Parahippus and Pliohippus |
| 3. | Origin of Homo erectus, Homo neander thalensis, Homo sapiens fossils, Homo sapiens sapiens |
| 4. | Origin of Biston betularia from Biston carbonaria |
There are five factors known to affect Hardy-Weinberg equilibrium, which of the following cannot be included in the five factors?
1 Gene flow and genetic drift
2 Genetic recombination and natural selection
3 Mutation
4 Isolation
The diagram shown below represents Miller's experiment with certain labelled parts. Find out the correct set of labelling:
| 1. |
A - CH4, NH3, H2O, vapour, CO2 B - Vacuum pump C - Alanine, glycine, aspartic acid |
| 2. |
C - Alanine, glycine, glutamic acid D - Vacuum pump F - Electrodes |
| 3. |
A - CH4, NH3, H2 , H2O B - Condenser E - Vacuum pump |
| 4. |
A - CH4, NH3, H2O, vapour, H2 B - Alanine, Glycine, aspartic acid D - Boiling water |
Mark the incorrect statement with respect to evolution
| 1. | When we see objects in our immediate surroundings we see them instantly and hence in the present time |
| 2. | When we look at stars on a clear night sky we are, looking back in time |
| 3. | Stellar distances are measured in kilometers |
| 4. | Huge clusters of galaxies comprise the universe |
Who concluded that existing living forms share similarities to varying degrees not only among themselves but also with life forms that existed millions of years ago?
1. Charles Lyell
2. Charles Darwin
3. Lamarck
4. A. Weismann
Mark the correct character of the following figure
1 Tetrapedal and having bony plates on back
2 Tetrapedal and having collar on neck
3 Bipedal and have huge fearsome dagger-like teeth
4 Bipedal and have three horns on head
In England before industrialisation set in, it was observed that there were more white winged moths on trees than dark-winged or melanised moths. After industrialisation, there was more dark winged moths in the same area. The explanation put forth for this observation is
a. White winged moths changed into melaised form in polluted environment due to deposition of soot
b. The tree trunks became dark due to industrial smoke and soots. Under this condition the white winged moth did not survive due to predator
c. Dark winged or melanised moth survived as they could hide in the background
d. Black winged moth are recessive mutants of the same gene
How many of the above statements are correct?
1 One
2 Two
3 Three
4 Four
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