Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

In a cross between two tall pea plants, some of the offsprings produced were dwarf. Show with the help of Punnet square, how this is possible.

Enumerate four objectives for improving the nutritional quality of different crops for the health benefits of the human population by the process of “Biofortification”.

PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.

1. Explain the property that prevents normal cells from becoming cancerous.
2. All normal cells have inherent characteristic of becoming cancerous. Explain.

Name the bacterium responsible for the large holes seen in “Swiss Cheese”. What are these holes due to?

It is often observed that the chances of a person suffering from measles in his or her lifetime are low if he or she has suffered from the disease in their early childhood. Justify the statement.

short answer questions
Enlist the external genital organs in female.

Why do pollen grains of some flowers trigger ‘sneezing’ in some people?

How did a citizen group called Friends of Arcata Marsh, Arcata, California, USA, help to improve water quality of the marshland using Integrated Waste Water Treatment? Explain in four steps.

Humans, as well as other animals, have been dumping their wastes into the environment for thousands of years. What is the reason that this appears to be such a problem today?