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. If proper mutation does not happen mam...

. If proper mutation does not happen mammals could be extinct in extreme hostile environment-Explain two such mutations or variations.

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In the 1950s, there were hardly any mosquitoes Delhi. The use of the pesticide DDT on standing water killed their larvae. 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.

UNITED BOOK HOUSE-RANIGANJ CORONATION SCHOOL PAPER-EXERCISE
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  3. . If proper mutation does not happen mammals could be extinct in extre...

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  8. Express your opinion as an environmentlist which things you could incl...

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  9. Which of the following statement is not correct -

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  10. Decide which one of the following statements regarding in-situ conserv...

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  11. ACTH secrets from gland.

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  12. Distance between two stands of a DNA is.

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  13. In heterozygous organism character is suppressed.

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  14. According to Darwinism Which is helpful for struggle for life is surv...

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  15. A green house gas produce from airconditionar is.

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  16. What kind of ecosystem is a kelp forest?

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  17. Cerebrum is called the thermostat of body.

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  18. Chromosomes move to the pole of spindle fibre in metaphase.

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  19. In case of thalassemia deformation of bones takes place.

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  20. When does a point mutation lead to a missense mutation?

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