The nitrogenous bases in a DNA are Purines – Adenine, Guanine and Pyrimidines – Cytosine ,Thymine. A purine pairs with Pyrimidine. A=T C = Read More …
Category: Molecular basis of inheritance
A polypeptide consists of 15 different Amino Acids. How many tRNAs are needed for the synthesis of this polypeptide?
Since each Amino acid is coded for by a codon. Each codon has a tRNA with a corresponding anti- codon. The number of tRNAs Read More …
Describe in detail the structure of DNA polynucleotide chain.
A nucleotide has three components – a nitrogenous base, a pentose sugar deoxyribose , and a phosphate group. There are two types of nitrogenous Read More …
Describe the process of transcription in bacteria.
RNA polymerase binds to the promoter and initiates transcription (initiation). It uses nucleosides triphosphates as substrate and polymerises in a template dependent fashion following Read More …
Draw a neat labelled diagram of DNA double helix
Differentiate between DNA & RNA
Draw a diagram showing Watson & Crick Model of semi conservative replication
Explain in detail how amino acids are polymerised to proteins?
Translation is the second part of the central dogma of molecular biology : RNA → Protein. It is the process in which the genetic code Read More …
Consider that a double stranded DNA has 15% Guanine . What will be the % of Thymine? Explain?
Acc. To Chargaffs rule the ratio of Purines : Pyrimidines is a constant in a double strand ed DNA for a given species . Read More …
In a given DNA molecule, if the amount of thymine is 35% what will be the % of adenine. Options are – i. 15% ii. 30% iii. 35% iv. 20%
According to Chargaff’s rule the ratio of Purines : Pyrimidines in a double stranded DNA, is a constant for a given species .This ratio Read More …
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