
Which of the following is an evidence of evolution from molecular biology?

Important Questions on The Path Traversed by Life
Statement (S): Less than of the human genome encodes for functional units called 'proteins'.
Reason (R): The majority of the human genome is regulatory in nature.
Which of the following is true?


Statement I: Organs which have similar structure and origin but perform different functions are called analogous organs.
Statement II : The sudden appearance of some vestigial organs in a better developed condition is called atavism
The correct option among the following is



Match the following
Set-I | Set-II | ||
(A) | Cyanognathus | (I) | Reptiles & birds |
(B) | Archaeopteryx | (II) | Amphibians & reptiles |
(C) | Seymouria | (III) | Reptiles & mammals |
(D) | Eusthenopteron | (IV) | Protochordates & fishes |
(V) | Fishes & amphibians |
The correct match is


Assertion (A): Homologous characters are originated from a different ancestor
Reason (R): Wings of sparrow and finches are homologous




Observe the illustration and answer the questions.
Write any two other scientific evidences which proves evolution.


Study the following statements
I) Gene that codes for the synthesis of dystrophin is the largest human gene
II) Chromosome contains the highest number of genes
III Endonucleases are used to cut the DNA at specific region
IV) Whole hereditary information encoded in DNA of an organism is called genome
Among the above identify the correct statements

Match List with List.
List | List | ||
(a) | Adaptive radiation | (i) | Selection of resistant varieties due to excessive use of herbicides and pesticides |
(b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
(c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
(d) | Evolution by anthropogenic action | (iv) | Darwin Finches |

Assertion (A): There is a sufficient reason to believe that first cells on the planet lived in an atmosphere lacking oxygen.
Reason (R): Thus even all living organisms retain the enzymatic mechanism to completely oxidise glucose without the help of oxygen.
The correct option among the following is:

LIST-I | LIST-II | ||
A | The golden age of reptiles | I | Carboniferous period |
B | Age of amphibians | II | Cenozoic era |
C | The golden age of fishes | III | Mesozoic era |
D | Age of mammals | IV | Devonian period |
V | Silurian period |
The correct match is




