Answer the following problems.

problem1) prepare the genotypes and the phenotypes of the persons with Klinefelter Syndrome and Down Syndrome.

problem2) describe the role of T and B Lymphocytes in eliciting immune response.

problem3) describe the experiment of Avery, McLeod and McCarty. Why is it considered important in the field of Genetics?

problem4) prepare brief notes on the following:

(i) Applications of genetic engineering in medicine

(ii) Hardy;Weinberg Law

problem5) Differentiate the following pairs of words:

(i) Multiple alleles and multiple genes

(ii) Complete linkage and incomplete linkage

problem6) Define the following terms:

(i) Extra;nuclear inheritance

(ii) Interstitial deletion

(iii) Intergenic mapping

(iv) Quantitative inheritance

(v) Crystallised intelligence

problem7) (i) describe the Jacob and Monad Model for the regulation of gene expression in
lac Operon.

(ii) With the help of appropriate exs describe the four types of structural abnormalities that occur in chromosomes.

(iii) describe the role of autopolyploidy and allopolyplo idy in the evolution of plants.