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In the 1950s, there were hardly any mosq...

In the 1950s, there were hardly any mosquitoes Delhi. The use of the pesticide DDT on standing water killed their larve. It is believed that now there are mosquitoes because they evolved DDT resistance through the interaction of mutation and Natural Selection. Pointwise. state in a sequence how that could have happened.

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Certain larvae born with mutation which conferred resistance to DDT: DDT sensitive larvae died, DDT resistant larvae completed life history and became adult mosquitoes: natural selection caused greater reproduction of DDT resistant mosquitoes which soon replaced DDT sensitive mosquitoes.
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TRUEMAN BIOLOGY-GENETICS AND EVOLUTION -SECTION-C
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  9. Explain codominance taking an example of human blood groups in the pop...

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  10. Define natural selection. Mention its types.

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  11. "A population has been exhibiting genetic equilibrium". Answer the fo...

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  12. In the 1950s, there were hardly any mosquitoes Delhi. The use of the p...

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  13. Discovery of Lobefins is considered very significant by evolutionary b...

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  14. Study the figure and answer the following (a)Write your observati...

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  15. (a)Rearrange the following in an ascending order of evolutionary tree:...

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  16. (a) What is adaptive radiation. (b) Explain with the help of suitab...

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  17. Study the figures below and answer the following : (a)Mention the sp...

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  18. Branching descent and natural selection are the two key concepts of Da...

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  19. With the help of one suitable examples explain the effect of anthropog...

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  20. Explain the increases in the numbers of melanic(dark winged) moths in ...

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