Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science.

Mention any two ways in which single nucleotide polymorphism (SNP_(S)) identified in human genome can bring revolutionary change in biological and medical science.

Mention any two plants which can indicate SO_2 pollution.

Mention any two ways of non-biological nitrogen fixation.

Find the number of ways in which 13 identical apples can be distributed among 3 persons so that no two persons receive equal number of apples and each can receive any number of apples.

Find the number of ways in which six persons can be seated at a round table, so that all shall not have the same neighbours n any two arrangements.

A library has a copies of one book, b copies each of two books, c copies each of three books, a single copy of d books. The total number of ways in which these books can be arranged in a shelf is equal to a. ((a+2b+3c+d)!)/(a !(b !)^2(c !)^3) b. ((a+2b+3c+d)!)/(a !(2b !)^(c !)^3) c. ((a+b+3c+d)!)/((c !)^3) d. ((a+2b+3c+d)!)/(a !(2b !)^(c !)^)

A class has tree teachers, Mr. X , Ms. Y and Mrs. Z and six students A , B , C , D , E , F . Number of ways in which they can be seated in a line of 9 chairs,if between any two teachers there are exactly two students is