Human Reproduction — BIOLOGY STD 12 Science — Question

Is there any difference between recombinant DNA and recombinant protein? Support your answer.

Why are coral reefs not found from West Bengal to Andhra Pradesh but found in Tamil Nadu on the east coast of India?

Name the type of immunity that is present at the time of birth in humans. Explain any two ways by which it is accomplished.

How is the presently occurring species extinction different from the earlier mass extinctions?

Explain how Industrial melanism supports Darwin theory of Natural selection.

'Introducing sex education in school is a good step for providing right information to adolescents'. In context to the statement given above, answer the questions that follow.

1. Which part of the brain controls the sex urge?
2. What are the necessary topics that should be taught in schools, in context of STDs and AIDS.

Can an unfertilised, apomictic embryo sac give rise to a diploid embryo ? If yes, than how ?

Write the causes symptoms and control to cholera.

On which observation, the law of segregation is based?

Describe the Microsporogenesis in flowering plants.