List of top Biology Questions on Genetics and Evolution

The size of VNTR varies from:

Match List-I with List-II:

List-I (Genes)	List-II (Proteins– Codes for lac operon)
(A) i	(I) permease
(B) a	(II) β-galactosidase
(C) y	(III) transacetylase
(D) z	(IV) repressor

Choose the correct answer from the options given below:

Analogous structures are a result of:

Amino acid is attached to which site of tRNA?

Select the incorrect statement:

Nucleosome is:

A thermostable DNA polymerase is isolated from:

Which of the following represents a test cross in which half the offspring is heterozygous and half would be homozygous recessive?

In which phase of the cell cycle does replication of DNA take place?

Who performed experiments on Vicia faba to prove that the DNA replicates semi-conservatively?

Match List-I with List-II:

List-I (Scientists)	List-II (Discovery)
(A) Sutton and Boveri	(II) Chromosomal Theory of Inheritance
(B) Sturtevant	(IV) Genetic maps
(C) Henking	(I) X-Body
(D) Griffith	(III) Transformation in bacteria

Choose the correct answer from the options given below:

Which of the following does not affect the Hardy-Weinberg equilibrium?

The Dihybrid test cross ratio is

McDougall experiment with rats supported

According to Hugo de Vries, the mechanism of evolution is

Among the following sets of examples for divergent evolution, select the incorrect option :

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

What is meant by the term fitness according to Darwinism?

Mac-Conkey medium is an example of

Variation in gene frequencies within population can occur by chance rather than by natural selection. This is reffered to as

If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child ?

Which of the following statements is not true of two genes that show 50% recombination frequency ?

If two persons with 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1:2:1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of

The complex formed by a pair of synapsed homologous chromosomes is called