Advertisements
Advertisements
प्रश्न
List any three drawbacks of Darwinism.
उत्तर
Drawbacks of Darwinism :
(i) Though his theory is based on the presence of variations, he could not explain the origin of variation nor could he attach any importance to mutations.
(ii) Darwin could not explain the origin of new characters. It only provides mechanism of modification of already existing characters.
(iii) Over specialized organs are those which have grown beyond their maximum usefulness. They have become a hindrance for the animal, e.g., branched antlers of deer, tusk of elephant, etc.
APPEARS IN
संबंधित प्रश्न
Explain the interpretation of Charles Darwin when he observed a variety of smallblack birds on Galapagos Islands.
Objection to Darwin's theory of natural selection.
Give the scientific name of the organism which is cited as the classical example of "natural selection".
Select the correct statement.
Study the following cross and showing self pollination in F1, fill in the blank and answer the question that follows
| Parents | RRYY | × | rryy |
| Round, Yellow | wrinkled, green | ||
| F1- | Rr Yy | × | ? |
| Round, yellow |
Distinguish between directional, stabilizing and disruptive selection.
Industrial melanism was highlighted by ______.
The famous book "The Origin of Species" was written by ______.
Mention four main postulates of Darwin's theory.
Define the following term:
Natural selection
