In transition substitution a purine is replaced by another purine base (A with G or vice versa). In transversion substitution a purine is replaced by a pyrimidine base or vice versa. Frameshift mutation is a type of mutation where the reading of codons is changed due to insertion or deletion of nucleotides. Transition is the formation of RNA over the template of DNA.

Correct Option: C

In transition substitution a purine is replaced by another purine base (A with G or vice versa). In transversion substitution a purine is replaced by a pyrimidine base or vice versa. Frameshift mutation is a type of mutation where the reading of codons is changed due to insertion or deletion of nucleotides. Transition is the formation of RNA over the template of DNA.

Telomerase is a ribonucleoprotein which synthesize the rich strand of telomers in DNA. Telomerase is an enzyme that adds specific DNA sequence repeats ("TTAGGG" in all vertebrates) to the 3' ("three prime") end of DNA strands in the telomere regions, which are found at the ends of eukaryotic chromosomes. The telomeres contain condensed DNA material, giving stability to the chromosomes. The enzyme is a reverse transcriptase that carries its own RNA molecule, which is used as a template when it elongates telomeres, which are shortened after each replication cycle. Telomerase was discovered by Carol W. Greider in 1984.

Correct Option: C

Telomerase is a ribonucleoprotein which synthesize the rich strand of telomers in DNA. Telomerase is an enzyme that adds specific DNA sequence repeats ("TTAGGG" in all vertebrates) to the 3' ("three prime") end of DNA strands in the telomere regions, which are found at the ends of eukaryotic chromosomes. The telomeres contain condensed DNA material, giving stability to the chromosomes. The enzyme is a reverse transcriptase that carries its own RNA molecule, which is used as a template when it elongates telomeres, which are shortened after each replication cycle. Telomerase was discovered by Carol W. Greider in 1984.

The process of formation of protein sequence from DNA strand is called transcription which requires RNA polymerase chain. RNA polymerase
(i) RNA polymerase-I
(ii) RNA polymerase II
(iii) RNA polymerase-III

Correct Option: D

The process of formation of protein sequence from DNA strand is called transcription which requires RNA polymerase chain. RNA polymerase
(i) RNA polymerase-I
(ii) RNA polymerase II
(iii) RNA polymerase-III

Polysome (Polyribosome) is a complex formed by several ribosomes attached to a single mRNA molecule in the process of translation.

Correct Option: A

Polysome (Polyribosome) is a complex formed by several ribosomes attached to a single mRNA molecule in the process of translation.

GCU indicates alanine but GUU indicates valine. Stop codons are UAG, UGA and UAA AUG is the most common start codon which codes for methionine. UUA indicates leucine but UCA indicates serine.

Correct Option: B

GCU indicates alanine but GUU indicates valine. Stop codons are UAG, UGA and UAA AUG is the most common start codon which codes for methionine. UUA indicates leucine but UCA indicates serine.