STD 12 - 7. human health and disease — BIOLOGY STD 12 Science — Question

Night blindness can be prevented by use of:

- It grows near the root system

- effective biocontrol agents ofseveral plant pathogens

- A biological control being developed for use in the treatment of plant disease select correct option on the basis of above sentences

A and B genes are linked. What shall be the genotype of progeny in a cross between AB/ab and ab/ab?

If dwarf pea plant was treated with Gibberellic acid, it grew as tall as the pure tall pea plant. If this treated plant is crossed with a pure tall plant then the phenotypic ratio of is likely to be

The process of translation of mRNA to proteins begins as soon as :

The reason why some mutations which are harmful and yet do not get eliminated from gene pool is that:

The material for organic evolution is:

Random genetic drift in a population probably results from:

In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?

The cells affected in leukaemia are: