New genetic variations may occur because of (Check all that apply) Select 3 correct answer(s)" A) new mutations B) Darwinian selection C) gene deletions D) genetic drift E) gene duplications
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- What is the relationship between artificial selection and natural selection?Describe three or more genetic mechanisms that may lead to the rapid evolution of a new species. Which of these genetic mechanisms are influenced by natural selection, and which are not?How does the synthetic theory of evolution incorporate knowledge from Genetics and Molecular Biology into the darwinism?
- What causes evolutionary (genetic) change?Is gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some genetic disorders? Can this and other technology be used to influence the evolution of our species? Should there be guidelines for the use of genetic technology to control its application to human evolution? Who should create and enforce these guidelines?How do mutations work with natural selection in the theory of evolution?
- In addition to Darwin, who do we credit for formulating the theory of evolution by natural selection?How did Spiegelman et al.' s experiments in 1967 & 1970 on the origins of natural selection provide evidence for natural selection in an RNA-based world? A) The starting RNA strand was originally ~4,000 nucleotides; after several serial transfers it was reduced to ~200 nucleotides as a result of faster replication of shorter sequences being advantageous and selected for. B) The starting RNA strand was originally ~4,000; after several serial transfers and the introduction of additional RNA molecules it increased to ~20,000 nucleotides as a result of hybridization with the longer RNA molecules having outcompeted shorter RNA strands. C) The RNA remained at approximately is original sequence of ~4,000 nucleotides, demonstrating fitness in a stable environment. D) These experiments did not demonstrate natural selection.How does artificial selection, natural selection, genetic drift, mutation and recombination beneficial to the different organisms?