Sources of Variation

Key Questions

• How can a mutation lead to evolution?

  If a mutation results in a trait that will increase the likelihood that the individual having the mutation will survive, mate, and produce offspring that have the same mutation, then that population will evolve. As more and more members of the population having the mutation reproduce and pass on the mutation to more and more members of the population, the allele frequency for that trait will change, and that population will have undergone evolution.

  Meave60 · 7 · Aug 20 2014

• How is artificial selection different from genetic engineering?
• How can a mutation lead to evolution?
• How does variation lead to evolution?
• What are sources of variation for evolution?
• What are sources of variation within a species?
• What is independent assortment, and how does it contribute to variation within a species?
• How is genetic variation increased by fertilization?
• How would you explain how independent assortment, crossing over, and random fertilization contribute to genetic variation?
• Why is genetic variation important to living organisms?
• How would you explain why crossing-over is an important source of genetic variation?
• Why is sexual reproduction a more important source of genetic variation than asexual reproduction?
• Why is crossing over an important source of genetic variation?
• How does meiosis result in genetic variation in a population?
• What are the causes and effects of genetic variation in human?
• Is genetic recombination a major source of variation among organisms?
• How is the independent assortment of chromosomes a source of genetic variation?
• What is the ultimate source of variation needed for evolutionary change?
• Why does crossing over promote genetic variation?
• What is the difference between 'the bottleneck effect' and 'the founder effect'?
• What's the difference between macro-evolution and micro-evolution?
• How did mutation influence human evolution?
• How does genetic variation increase the chance that some individuals will survive in a population?
• Question #83394
• What causes many endangered species that are now found only in zoos to have very little genetic variation?
• Why does cross-pollination produce more genetic variation than n the offspring that self-pollination produces?
• Question #467c7
• What is ram ventilation?
• Which type of reproduction induces more genetic variation - self pollination or cross pollination?
• What are sources for genetic variation?
• How does meiosis contribute to genetic variation in a speciation?