Which statement best explains the evolutionary advantage of meiosis? (a) meiosis is necessary for

Which statement best explains the evolutionary advantage of meiosis?

(a) meiosis is necessary for sexual reproduction

(b) genetic recombinations are possible from generation to generation

(c) meiosis alternates with mitosis from generation to generation

(d) the same genetic system is passed on from generation to generation.

Answer: There is evolutionary advantage of meiosis because recombination (genetic) are possible from one generation to another generation.

Hence,option(b) is correct answer.

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In \(\Delta PQR\) , \(M\) and \(N\) are points on \(PQ\) and \(PR \) respectively, such that \(\overline {MN} \ || \ \overline {QR}\) .If \(PM=x\) , \(PR=x+9,PQ=x+13\) and \(PN=x-2\) , then find \(x.\)（ ）

A. \(10\)

B. \(11\)

C. \(13\)

D. \(15\)

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