Sonali Phanase, Dr. M. Gangakhedkar, Tejal Shinde, Rahul Jawale and, Rachel Fernandes Solutions for Chapter: Gene: Its Nature, Expression and Regulation, Exercise 3: Evaluation Test

Which among the following are the features of "Genetic code"?

(i) It is a triplet or three-letter code.

(ii) The code is overlapping.

(iii) The code is commaless.

(iv) The genetic code was deciphered by Watson & Crick.

Which of the following are required for protein synthesis?

(i) DNA to provide the base sequence

(ii) $20$ types of amino acids

(iii) genetic type of RNA

(iv) non-genetic type of RNA such as mRNA, rRNA, tRNA

(v) ATP/GTP as a source of energy

Find out the wrong statement.

If the base sequence of one strand of DNA is $\mathrm{GAT} \mathrm{TAG} \mathrm{CAT} \mathrm{GAC}$, what shall be the sequence of its complementary strand?

The number of adenine molecules in a given DNA segment is $25$, and the number of cytosine molecules is $45$. The total number of nucleotides in the segment is

Select the correct/incorrect functions of the following enzymes:

(i) Ligase-Joins short DNA segments.

(ii) DNA Polymerase - Cuts DNA at specific sites.

(iii) Helicase - Separation of two strands of DNA

Which of the following event does not occur during the elongation process of translation?

(i) Formation of peptide bonds between the successive amino acids with help of enzyme peptidyl transferase.

(ii) Translocation of the ribosome, i.e., ribosomes move along mRNA in $5^{\text{'}}\to 3^{\text{'}}$ direction.

(iii) Addition of amino acids to the polypeptide chain.

(iv) Release of the polypeptide chain.

What is true about the Watson-Crick model of DNA?