The organic evolution mechanism was proposed by

Nitrogenous base adenine of one nucleotide forms pair with

A. thymine

B. cytosine

C. guanine

D. adenine

Mendel crossed a true-breeding round seeded plant with

A. oval seeded plant

B. circular seeded plant

C. wrinkled seeded plant

D. elongated seeded plant

The Persian scientist who expressed the term of "artificial selection" was

A. Abu Rehyan Beruni

B. Ibn ul Haithem

C. Avi Cena

D. Al-Khwarizmi

If a true-breeding tall plant was crossed with true-breeding short the result was

A. all short

B. all tall

C. half tall

D. half short

How many total chromosomes are present in a human's body cell?

A. 23

B. 46

C. 26

D. 52