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Tuesday, 10 October 2017

Assignment no 21 for 10th

Assignment no 21 for 10th
Q1 Explain the mechanism of sex determination in human beings.
Q2 With the help of suitable illustration , explain the process of
(a)Evolution through natural selection
(b)Evolution by chance
Q3Prove that acquired traits are not inherited?
HOTS
Q1 Describe the process of speciation with the help of key factors .
Q2 How much chance a wrestler hold for his son to be a wrestler?Give reason for your answer? 

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