Organisms and Populations — BIOLOGY STD 12 Science — Question

Mention the chemical change that proinsulin undergoes, to be able to act as mature insulin.

CryIAb is introduced in a plant to control infestation by corn borer.

1. Name the resultant plant after successful insertion of the gene desired.
2. Summarise the action of the gene introduced.

How does malaria differ from chikungunya with reference to their vectors?

Golden rice is:

1. A transgenic rice having gene for - carotene.
2. Wild variety of rice with yellow coloured grains.
3. Long stored rice having yellow colour tint.
4. A variety of rice grown along the yellow river in China.

Mention the information that the health workers derive by measuring BOD of a water body.

Expand the term ZIFT.

Write the name of 2 STDs which are transmitted through contaminated blood.

Fill in the blanks:
Fertilisation takes place in _____________.

Name the descendants of seed fern.

Name and state the law of Mendel, which explains the expression of only one of the parental characters in the F₁-generation of a monohybrid cross.