File Details:
{"filename":"bsc-1-sem-ag-botany-elements-of-genetics-11143-dec-2018.pdf","description":"This file contains the B.Sc. First Semester (Agriculture) examination paper for Botany, Elements of Genetics (D-193) from December 2018. It includes questions on polyploidy, mutation, Mendel's laws, DNA structure, multiple alleles, and chromosomal changes."}
Questions:
- Describe the role of polyploidy in the evolution of wheat and mustard.
- Define mutation. Describe the role of mutations in crop improvement.
- What do you understand by multiple alleles? Describe it with the help of A, B, O blood group in human beings.
- In squashes, the difference in fruit weight between 400 gm and 1000 gm types is due to three gene pairs. What would be the phenotype and genotype of F1 and F2 in a cross between 400 gm and 1000 gm types?
- Discuss Mendel's laws of inheritance briefly. Which law do you think is the most important and why?
- What are the different kinds of structural changes of chromosomes? Explain any one in detail.
- Write a short note on chemical mutagens.
- Write down the contribution of T.H. Morgan in genetics.
- Describe the double helical structure of DNA.
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