According to Darwin's theory of evolution, long necks in giraffes
A. arose because of constant attempt to reach leaves on tall trees, generation after generation
B. do not give them any special advantage and is just an accident
C. give them advantage in finding food, because of which those with long necks survive
D. is a result of the special weather prevalent in African Savannah
Answer: Option C
This Question Belongs to Biology GK Chapter Wise >> Gentics And Evoloution
A piece of DNA molecule that can serve as a carrier for the gene to be cloned is called as a
A. Virus
B. Vector
C. DNA junk
D. Gene factor
A haploid organism contains only one set of chromosomes, and is said to be
A. Homozygous
B. Heterozygous
C. Hemizygous
D. Holozygous
Which of the following is the correct pair?
A. Darwin - Use and disuse of organs
B. de Vries - Mutation theory
C. Lamarck - Origin of life
D. Haldane - Law of heredity
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