Reproductive Health — BIOLOGY STD 12 Science — Question

Mention the two assumptions that led to the HGP.

How can DNA segments, separated by gel electrophoresis, be visualised and isolated?

What do you understand by balance of an ecosystem.

What is speciation? List any two events leading to speciation.

Write the function of adenosine deaminase enzyme. State the cause of ADA deficiency in humans. Mention a possible permanent cure for a ADA deficiency patient.

Differentiate between the Homo habilis and Homo sapiens.

The antibody which is mainly present in the sandwich ELISA is:

1. Detection antibodies.
2. Capture antibodies.
3. Monoclonal antibodies.
4. All of the above

A plasmid DNA and a linear DNA (both are of the same size) have one site for a restriction endonuclease. When cut and separated on agarose gel electrophoresis, plasmid shows one DNA band while linear DNA shows two fragments. Explain.

Mention the kind of biodiversity of more than a thousand varieties of mangoes in India represent. How is it possible?

Monohybrid and Dihybrid.