OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The DNA sequence codes for the order of the amino acids found in a protein. Each of the 20 amino acids have different chemical properties and polarities. If the DNA sequence is changed due to a mutation, this causes the order of the amino acids in the protein to change. This causes the overall shape and therefore function of the protein to change. This change in protein structure can cause phenotypic changes.
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the phenotype is controlled by random chance. So it can randomly be changed at any time.
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The photosynthesis of plants, change how our genes line up when we eat them., This change causes a vast array of phyotypical combinations. This shows that we could have many different and new genes expressed every day.
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It is due to the processes of transcription and transduction.
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Detailed explanation-1: -A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.
Detailed explanation-2: -Answer and Explanation: C. Mutations in a gene can result in a change in the sequence of amino acids such as in frameshift mutations and in missense and nonsense mutations occurring in point mutations. However, point mutations can also lead to silent mutations.
Detailed explanation-3: -A mutation may change a trait in a way that may even be helpful, such as enabling an organism to better adapt to its environment. The simplest mutation is a point mutation. This occurs when one nucleotide base is substituted for another in a DNA sequence. The change can cause the wrong amino acid to be produced.