What are 'true breeding lines' that are used to study inheritance pattern of traits in plants?
Name any two types of cells that act as 'cellular barriers' to provide innate immunity in humans.
Identify 'a' and 'b' in the figure given below representing proportionate number of major vertebrate taxa.
Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
How does the gene 'I' control ABO blood groups in humans? Write the effect the gene has on the structure of red blood cells.