.
1. What is meant by semi conservative replication?
2. How did Meselson and Stahl prove it experimentally?
3.. What does the lac operon consist of? How is the operator switch turned on and off in the expression of genes in this operon? Explain.
4. State salient features of genetic code.
5. Describe the process of transcription of mRNA is an eukaryotic cell.
6. Describe the various steps involved in the technique of DNA fingerprinting.
7.‘Industrial Melanism’ in peppered moth is an excellent example of ‘Natural selection’. Justify the statement.
8.. (i)In which part of the world, Neanderthal man lived? (ii)What was his brain’s capacity? (iii)Mention the advancement which Neanderthal man showed over Homo erectus.
9.Is evolution a ‘process’ or the end result of a ‘process’? Discuss. Describe various factors that effect Hardy-Weinberg equilibrium
.
10.Briefly explain the various reproductive technologies to assist an infertile couple to have children.
11.Why is the sobriquet ‘The Evil Quartet’ used in context of biodiversity? Name the members of this quartet. Why do we grieve for the genes when a species is lost?
12.A dihybrid heterozygous round, yellow seeded garden pea (Pisum sativum) was crossed with a double recessive plant. (i) What type of cross is this? (ii) Work out the genotype and phenotype of the progeny. (iii) What principle of Mendel is illustrated through the result of this cross?
13.A woman with O blood group marries a man with AB blood group (i) work out all the possible phenotypes and genotypes of the progeny. (ii) Discuss the kind of dominance in the parents and the progeny in this case.
14. Explain the cause of Klinefelter’s syndrome. Give any four symptoms shown by sufferer of this syndrome.
15. In Mendel’s breeding experiment on garden pea, the offspring of F2 generation are obtained in the ratio of 25% pure yellow pod, 50% hybrid green pods and 25% green pods State (i) which pod colour is dominant (ii) The Phenotypes of the individuals of F1 generation. (iii) Workout the cross.
16.How does primary sludge differ from activated sludge? What type of changes in the sludge are carried out in anaerobic sludge digester? Give the composition of biogas produced in the sewage treatment plant.
1. What is meant by semi conservative replication?
2. How did Meselson and Stahl prove it experimentally?
3.. What does the lac operon consist of? How is the operator switch turned on and off in the expression of genes in this operon? Explain.
4. State salient features of genetic code.
5. Describe the process of transcription of mRNA is an eukaryotic cell.
6. Describe the various steps involved in the technique of DNA fingerprinting.
7.‘Industrial Melanism’ in peppered moth is an excellent example of ‘Natural selection’. Justify the statement.
8.. (i)In which part of the world, Neanderthal man lived? (ii)What was his brain’s capacity? (iii)Mention the advancement which Neanderthal man showed over Homo erectus.
9.Is evolution a ‘process’ or the end result of a ‘process’? Discuss. Describe various factors that effect Hardy-Weinberg equilibrium
.
10.Briefly explain the various reproductive technologies to assist an infertile couple to have children.
11.Why is the sobriquet ‘The Evil Quartet’ used in context of biodiversity? Name the members of this quartet. Why do we grieve for the genes when a species is lost?
12.A dihybrid heterozygous round, yellow seeded garden pea (Pisum sativum) was crossed with a double recessive plant. (i) What type of cross is this? (ii) Work out the genotype and phenotype of the progeny. (iii) What principle of Mendel is illustrated through the result of this cross?
13.A woman with O blood group marries a man with AB blood group (i) work out all the possible phenotypes and genotypes of the progeny. (ii) Discuss the kind of dominance in the parents and the progeny in this case.
14. Explain the cause of Klinefelter’s syndrome. Give any four symptoms shown by sufferer of this syndrome.
15. In Mendel’s breeding experiment on garden pea, the offspring of F2 generation are obtained in the ratio of 25% pure yellow pod, 50% hybrid green pods and 25% green pods State (i) which pod colour is dominant (ii) The Phenotypes of the individuals of F1 generation. (iii) Workout the cross.
16.How does primary sludge differ from activated sludge? What type of changes in the sludge are carried out in anaerobic sludge digester? Give the composition of biogas produced in the sewage treatment plant.
