Microbes in Human Welfare. — Bio Zoology STD 12 — Question

Write a brief note on conjugation.

What are Okazaki fragments?

Name the famous flagship programme of Central Government launched to achieve pollution abatement and rejuvenation of River Ganga.

Name the four biodiversity hotspots in India.

Name any four biogeographic zones in India.

Differentiate between Heterochromatin and Euchromatin.

What does LAB stands for? Give two examples.

Fruit flies (Drosophila melanogaster) are the most widely used genetic tool by molecular geneticists. The life cycle of a fruit fly completes within a time span of 15 days. Calculate the death rate if 12 individuals in a laboratory population of 148 fruit flies died during a particular week.

Name the human chromosome that has

1. most number of genes
2. least number of genes

The process by which gravid proglottids of tapeworm gets cut off is called ___________