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neither A nor B antigens
both A and B antigens
sometimes A antigen and sometimes B antigen
A antigen only
There is no bacteria activity in which of the following process?
Thermostat that regulates temperature in human body is located in
These are rods or filament like very small bodies present in the cytoplasm of all cells of plants and animals.
They are considered to be the most primitive and are surely the first of the vertebrates.
They are extremely diverse group of organisms.
They are probably the simplest and the smallest living organisms possessing cellular organisation.
They have also proved extremely useful in our quest of knowledge of outer space.
Thiamidine dimer formation in DNA is caused by
This is reversal of mutation
Through cell membrane, which substances can pass more easily than others?