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Biology, 28.03.2021 16:10 dummynate

2. Describe any 10 practical applications of the knowledge of genetics to solve human problems (20 marks)
3. (a) Outline reasons why Gregor Mendel chose garden pea (Pisum sativum)
study of inheritance (6 marks)
(b) Give four conclusions drawn by Mendel based on observations in table
(8 marks)
Trait
Cross
F1
F2 count
F2 phen
Seed form
Round (R) * Wrinkled (W)
All R.
3 R:1
Cotyledon colour Yellow (Y) Green (G)
5474 R
1859 W
6022 Y
2001 G
All Y Y
3Y:1
(c) State Mendel's first law of segregation (4 marks)
SECTION B: CROP IMPROVEMENT
4. Write short notes on the following plant breeding methods (4 marks each)
i. pedigree selection

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