Question
"The codon is a triplet and is read in a contiguous manner without punctuations." Provide the genetic basis for the statement.
✓
Answer
Since there are only four bases which code for twenty amino acids, the code should be made up of three bases, i.e., (4 × 4 × 4) = 64 codons; a number more than the required. If the codon consists of four letters, only (4 × 4), only sixteen codons are possible, which is less than the required. Hence the codon is a triplet. As the ribosome moves on mRNA, continuously without break, the codons are read in a contiguous manner.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Why Amrita Devi Bishnoi Wildlife Protection Award is started by Government of India? To whom is it given?
What is linkage? How many linkage groups do occur in human being and maize?
How is the amplification of a gene sample of interest carried out using Polymerase Chain Reaction (PCR)?
All animals are called consumers.
Two children, A and B aged 4 and 5 years respectively visited a hospital with a similar genetic disorder. The girl A was provided enzyme-replacement therapy and was advised to revisit periodically for further treatment. The girl, B was, however, given a therapy that did not require revisit for further treatment.
- Name the ailments the two girls were suffering from?
- Why did the treatment provided to girl A required repeated visits?
- How was the girl B cured permanently?
Given below are the events that are observed in an artificial hybridisation programme. Selection of parents → Emasculation → Bagging → Collection of pollen from other male plant → Dusting of pollen on stigma — Rebagging.
While, planning for crop improvement involving dioecious plants, which of the above mentioned steps would not be relevant?
While, planning for crop improvement involving dioecious plants, which of the above mentioned steps would not be relevant?
Plants raised through tissue cultures are clones of the ‘parent’ plant. Discuss the utility of these plants.
Write in what context did Darwin use the terms 'fitness', 'survival' and 'selection' while elaborating on the mechanism of evolution.
Explain the process of pollination in Vallisneria. How is it different in water-lily, which is also an aquatic plant?
The following is the flowchart highlighting the steps in DNA fingerprinting technique. Identify A, B, C, D, E and F.
