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Genetics Linkage And Crossing Over - Questions and Answers

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21. The ratio observed by Bateson and Punnet when they test crossed in sweet pea between BbLl and bbll was
A. 9:3:3:1
B. 9:7
C. 7:1:1:7
D. 12:3:1
Explanation:
22. The number of Chromosomal pairs in Drosophila melanogaster is
A. 1 pair
B. 2 pair
C. 3 pair
D. 4 pair
Explanation:
23. In maize parental and recombinations are produced in the ratio of
A. 50:50
B. 9:7
C. 96.4:3.6
D. 1:7:7:1
Explanation:
24. Crossing over plays an important role in the process of
A. Mutation
B. Heredity
C. Evolution
D. Variation
Explanation:
25. Mutation helps for
A. evolution
B. cell division
C. fertilization
D. protein synthesis
Explanation:
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