Paper-II
Section A

Write short notes on any four of the following in about 150 words each

Cell fractionation

MPF

Pseudoallelism

Nucleolus

Importance of apomixis in plant breeding

Answer the following questions

Enumerate various techniques used or gene mapping.

‘Recombination and independent assortment are dependent on the positions that the genes occupy.’ Justify this statement

Answer the following questions

What are transgenics and how do they differ from recombinants

What is Bt cotton

Discuss the pros and cons of the use of transgenic crops

Answer the following questions

What was the impact of the discovery of sex chromosomes on genetics

What is the balance concept of sex determination and how was this established

Section B

Write short notes on any four of the following in about 150 words each:

Coenzvmes

Fermentation

Air pollution

Global warning

Vernalization

Answer the following questions

Describe stepwise various reactions involved in the process of photosynthesis

Draw a well-labelled diagram of a chloroplast as seen under an electron microscope

Answer the following questions

Describe the importance of studying stress physiology of plants growing under adverse conditions

Describe the molecular basis of fruit ripening. How has our understanding of this process helped in fruit marketing (15

Answer the following questions

Discuss the causes and consequences of water pollution

What is meant by biodiversity and how can it be conserved

Enumerate various forest types of India