What is an Allele?

If the variation occur in population by chance alone and not by natural selection and bring change in frequencies of an allele. What is it called?

What is Avagadro number ? What is a mole ?

What is an echo? What factors are important to get a distinct echo?

In a certain population, the frequency of three genotypes is as follows: What is the likely frequency of alleles 'B' and 'b'?

In a certain population, the frequency of three genotypes is an follows. What is the likely frequency of B and b alleles?

What is acceleration ? What are its types ?

What is a meristematic tissue? What are its characteristics?

What is a museum? What are the various specimens found in a museum?

Answer the following : What is an earthquake ? What are the effects of earthquake ?