MCQ
Gene mutations are those which involve:
- AThe change in nature and sequence of base triplets of DNA
- BThe change in genome
- CThe change in all the genes
- DThe disappearance of certain part of chromosome
Explanation:
Gene's transcription and translation produces a protein which has a specific function to perform. Also, a protein is a chain of amino acids. These amino acids are coded by codons or base triplets. Each codon will code for a particular amino acid. Change in sequence of these base triplets/ codons (due to mutation) will lead to code of different amino acid and ultimately it will lead to a different protein which may be functional or non-functional.
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Reason : Flower colour gene shows incomplete dominance.