B.Sc. Botany (Honours), Part-III
Paper-VIII (Genetics)
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. Questions No. 1 is compulsory. All questions carry equal marks.
1. Multiple choice questions:
Genotype-phenotype concept was given by:
Johannsen Charles Darwin Mendel Bateson
Cross between a heterozygous individual and homozygous recessive parent is called:
Monohybrid cross Dihybrid cross
Back cross Test cross
Colchicine is
steroid alkaloid cholesterol None of these
Which of the following technique is used for forensic scientist in the detection of crime?
DNA Fingerprinting DNA nicking
DNA Sequencing Gene therapy
XO Chromosomes abnormality cause:
Down's syndrome Turner's syndrome
Criminal syndrome Kleinefelter's syndrome
Induction of mutation by X-rays was discovered by:
Muller Morgan Hugo de vries Luria
F2 phenotypic ratio in the interaction of supplementary factor is:
9:7 12:3:1 13:3
(viii) The term anticodon is related with:
DNA m-RNA t-RNA r-RNA
2. What do you mean by interaction of gene? Explain citing one example.
3. Explain genetic code and also mention briefly its charactistics.
4. What are different tools used in genetic engineering? Give a brief account of it.
5. Define mutation. What are its types? How it helps in improvement of crop.
6. Give an account of human genome project.
7. Give a brief account of methodology followed in amplification of DNA.
8. Write short notes on any two of the following:
mRNA Wobble hypothesis
DNA sequencing Gene therapy
9. Give a brief account of conservation of germplasm.
10. What is polyploidy? Describe different types of polyploid. What is role of polyploidy in crop
improvement?