OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a change in DNA leads to a variation in the species, this is known as
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mutation
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natural selection
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extinction
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evolution
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Explanation:
Detailed explanation-1: -A gene variant is a permanent change in the DNA sequence that makes up a gene. This type of genetic change used to be known as a gene mutation, but because changes in DNA do not always cause disease, it is thought that gene variant is a more accurate term.
Detailed explanation-2: -Genetic variation refers to differences among the genomes of members of the same species.
Detailed explanation-3: -What is a mutation? If there is a change or “misspelling” in the nucleotide letter sequence of a gene, the protein may not be made or may not work properly. This misspelling of a gene is what we call a mutation (Figure 2). The entire collection of DNA in each cell is called the genome.
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