A new mutation in a population that clearly helps an individual organism to survive in its environment most likely arose how? The mutation happened by random chance in the organism. The mutation in this organism could have only happened by crossing over between two sister chromatids. The organism generated the mutation to adapt better. The organism generated the mutation to reproduce more.
Added by Lorraine R.
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These changes can occur spontaneously during DNA replication or as a result of exposure to mutagens such as radiation or chemicals. Show more…
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A deleterious mutation decreases the chances of survival and reproduction. The extreme example of a deleterious mutation is a lethal mutation, which results in death to the cell or organism. On the other hand, a beneficial mutation enhances the survival or reproductive success of an organism. Some mutations are called conditional mutations because they affect the phenotype only under a defined set of conditions.
Sri K.
A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria? A)The relative frequency of the mutation will increase as time passes. B)Because the mutation has changed the DNA of the bacteria, a new species will be formed. C)Because the mutation is abnormal, the mutation will become more rare with every passing generation. D)Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.
Rupsa S.
a. A mutation is a change in the hereditary material of life. b. Mutations can result either from errors in DNA replication or from the damaging effects of external factors, such as chemicals and radiation, which react with DNA and change the structure and arrangement of nucleotides. c. Since an organism's DNA is responsible for producing functional proteins that affect how an organism looks and behaves, a change in an organism's DNA may cause changes in other aspects of the organism's life. d. For example, a single change in the DNA sequence of a gene may influence the sequence of amino acids in a protein. e. This change can cause the protein to fold differently, changing its structure, and ultimately may cause the protein to function differently than its intended purpose.
Supreeta N.
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