Biotechnology—Principles and Processes — BIOLOGY STD 12 Science — Question

In higher vertebrates, the immune system can distinguish self­cells and non-­self. If this property is lost due to genetic abnormality and it attacks self­cells, then it leads to

A mutation is most likely to have a selective advantage in evolution if

A recombinant DNA molecule can be produced in the absence of the following:

Which piece of a sperm is called power house?

Which of the following is not true for double fertilization

Rishikesh is famous for the production of _______________:

Ovules are attached to a parenchymatous cushion called:

In an young anther the four rows of cells which later produce pollen are called