Human Reproduction — BIOLOGY STD 12 Science — Question

Mark the odd one in each of the following groups.
Aestivation, Migration, Hibernation, Diapause.

Give an example of polygenic trait in humans.

OR

On what basis is the skin colour in humans considered polygenic?

Inflated pods, Terminal flowers, Yellow seeds, Green pods (all in garden pea).

Mention the two additional processings which hnRNA needs to undergo after splicing so as to become functional.

What is the cause of Klinefelter’s syndrome?

Who developed the technique of DNA fingerprinting?

Give two reasons why a person infected with a venereal disease does not go for timely detection and treatment of it.

What are prions?

Given below is a statement state whether it as true or false. If false give reason.
Sequencing of whole genome with both the coding and non-coding regions is EST.

Which among the following is true for BT toxin?

1. It kills the lepidopterans.
2. It is coded by 'cry' gene.
3. It exists in bacteria as prototoxin.
4. All are true.