Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Give any two microbes that are useful in biotechnology.

What type of interaction is shown by a sparrow eating the seeds?

Who had proposed the chromosomal theory of inheritance?

Our government has intentionally imposed strict conditions for M.T.P. in our country. Justify giving a reason.

Briefly describe the following:
Polymorphism.

Agenetic disorder is transferred from a phenotypically normal, but a carrier female to some of her sons. What is the nature of the disease?

Name the cells that nourish the germ cells in the testes. Where are these cells located in the testes?

Name the basic requirement of any ecosystem to function and sustain.

Why does an AIDS patient suffer from many other infections?

Identify True/ False statements. Correct each false statement to make it true.
Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/ False)