6. Depending upon the chemical nature of the template (DNA or RNA) and the nature of nucleic acids synthesised from it (DNA or RNA), list the types of nucleic acid polymerases.
5. Which property of DNA double helix led Watson and Crick to hypothesise semi-conservative mode of DNA replication? Explain.
4 If the sequence of the coding strand in a transcription unit is written as follows:
Write down the sequence of mRNA.
3. If the sequence of one strand of DNA is written as follows:
Write down the sequence of complementary strand in direction.
2. If a double stranded DNA has 20 per cent of cytosine, calculate the per cent of adenine in the DNA.
1. Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.
10. Using various resources such as your school library or the internet and discussions with your teacher, trace the evolutionary stages of any one animal, say horse.
9. Can we call human evolution as adaptive radiation?
8. Describe one example of adaptive radiation.
7. Practise drawing various animals and plants.
6. List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.
5. Find out through internet and popular science articles whether animals other than man has self-consciousness.
4. Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)
3. Attempt giving a clear definition of the term species.
2. Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Q 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.
16. Mention any two autosomal genetic disorders with their symptoms.
15. Who had proposed the chromosomal theory of the inheritance?
14. What is point mutation? Give one example.
13. Explain the following terms with example
(b) Incomplete dominance