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​

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.