GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It might substitute a different amino acid in the active site.
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It might result in a chromosomal translocation.
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It might exchange one serine codon for a different serine codon.
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It might exchange one stop codon for another stop codon.
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Detailed explanation-1: -A point mutation in a DNA make a difference in the level of the proteins activity because it might substitute the n terminus of the polypeptide chain for the c-terminus.
Detailed explanation-2: -Answer and Explanation: A point mutation can make a difference in the level of the protein’s activity because it changes the genetic code, which can change the amino acids incorporated into the protein. DNA is the ultimate code for proteins in the cell. DNA is copied to mRNA (messenger RNA) through transcription.
Detailed explanation-3: -Why might a point mutation in DNA make a difference in the level of a protein’s activity? It might substitute a different amino acid in the active site. The genetic code is essentially the same for all organisms.
Detailed explanation-4: -A point mutation occurs in a genome when a single base pair is added, deleted or changed. While most point mutations are benign, they can also have various functional consequences, including changes in gene expression or alterations in encoded proteins.