List of top Biology Questions

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as :

Mutations in plant cells can be induced by

When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :

In the equation, GPP−R=NPP R represents :

Match List - I with List - II.

List - I

List - II 

(a)Cells with active cell division capacity (i)Vascular tissues
(b)Tissue having all cells similar in structure and function (ii)Meristematic tissue
(c)Tissue having different types of cells(iii)Sclereids
(d)Dead cells with highly thickened walls and narrow lumen(iv)Simple tissue

Select the correct answer from the options given below

Select the correct pair
Identify the correct statement.
Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain

The production of gametes by the parents, the formation of zygotes, and the F1 and F2 plants, can be understood from a diagram called :

Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complementary DNA in a clone of cells, followed by its detection using autoradiography because:

Complete the flow chart on central dogma.

central dogma

In the exponential growth equation \(N_t=N_o e^{rt}\), e represents:

Which of the following is not an application of PCR (Polymerase Chain Reaction)?

Which of the following stages of meiosis involves the division of the centromere?

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

Diadelphous stamens are found in :

Which of the following statements is incorrect

The factor that leads to the Founder effect in a population is

Which of the following statements is incorrect
What is the role of RNA polymerase III in the process of transcription in eukaryotes

Which of the following plants is monoecious?

Match List - I with List - II.
 List - I List - II
(a)S phase(i)Proteins are
synthesized
(b)G2 phase(ii)Inactive phase
(C)Quiescent stage(iii)Interval between
mitosis and initiation
of DNA replication
(d)G1 phase(iv)DNA replication

Choose the correct answer from the options given below.

The site of perception of light in plants during photoperiodism is

Match List - I with List - II.
 List - I List - II
(a)Protein(i)C=C double bonds
(b)Unsaturated fatty acid (ii)Phosphodiester bonds
(c)Nucleic acid(iii)Glycosidic bonds
(d)Polysaccharide(iv)Peptide bonds
Choose the correct answer from the options given below.