Please select a subject first
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How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
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How have transgenic animals proved to be beneficial in production of biological products?
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How have transgenic animals proved to be beneficial in chemical safety testing?
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Explain the process of sewage water treatment before it can be discharged into natural water bodies.
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Differentiate between the following:
Dominance and Recessive
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Differentiate between the following:
Homozygous and Heterozygous
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Differentiate between the following:
Monohybrid and Dihybrid
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When a cross is made between tall plant with yellow seeds (TtYy) and tall plant with green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be:
- Tall and green.
- Dwarf and green.
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A child has blood group O. If the father has blood group A and the mother has blood group B, work out the genotypes of the parents and the possible genotypes of the other offspring.
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What is the key difference between primary and secondary sewage treatment?
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Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20 mg/L, 8 mg/L and 400 mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each, assuming the river water is relatively clean?
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Can you think and answer how a reporter enzyme can be used to monitor the transformation of host cells by foreign DNA in addition to a selectable marker?
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Describe briefly the following:
Origin of replication
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What are transgenic bacteria?
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Distinguish between primary and secondary productivity.
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How is biodiversity important for ecosystem functioning?
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Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
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Why does primary productivity vary in different types of ecosystems?
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