Which statement best describes a source of new genetic variation in a species?A.New genetic traits can result when DNA is not copied exactly.B.One of several offspring from a set of parents learns new behaviors that make it unique.C.An exact copy of a successful set of genes is passed on to many offspring by asexual reproduction.D.An individual organism has genetic traits that help it survive.
Question
Which statement best describes a source of new genetic variation in a species?A.New genetic traits can result when DNA is not copied exactly.B.One of several offspring from a set of parents learns new behaviors that make it unique.C.An exact copy of a successful set of genes is passed on to many offspring by asexual reproduction.D.An individual organism has genetic traits that help it survive.
Solution
The statement that best describes a source of new genetic variation in a species is A. New genetic traits can result when DNA is not copied exactly. This is because genetic variation is primarily caused by mutation, which is a change in DNA sequence. This can occur when DNA is not copied exactly during cell division, leading to new genetic traits. The other options do not accurately describe sources of new genetic variation. Learning new behaviors (option B) does not change an organism's genetic makeup. Asexual reproduction (option C) does not typically introduce new genetic variation because it involves the replication of an existing set of genes. Having genetic traits that help an organism survive (option D) is a result of natural selection acting on existing genetic variation, not a source of new variation.
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