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प्रश्न
Explain the evolution of the long neck of giraffe according to Charles Darwin.
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उत्तर
Darwin explained the evolution of the long neck of modem Giraffe by presuming the existence of variability in length of neck and legs in the ancestral population of Giraffe. Long-necked giraffe with long forelegs was more successful in reaching soft leaves of trees for feeding. Therefore, natural selection favored long neck progeny generation after generation.
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संबंधित प्रश्न
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
Give the scientific name of the organism which is cited as the classical example of "natural selection".
In which book Darwin had published his theory of Natural selection?
Differences between organisms in a species are described as variations. Which of the following would you describe as a continuous variation?
Wild cabbage has evolved into new varieties like cabbage, broccoli, and cauliflower by ______
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 |
Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?
Nature has a way of causing organisms that inherit advantageous traits to survive and reproduce more successfully than the ones that do not. This process is known as ______.
Mention four main postulates of Darwin's theory.
Differentiate between Lamarck's Theory and Darwin's Theory.
