Darwin's Theory Of Natural Selection
What is natural selection?
Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. It is the process in which organisms better adapted to their environment manage to survive, meaning that they breed more offspring that have their genetic characters, while those less adapted tend to be eradicated.
What are the names of the scientists who first proposed the theory?
Charles Darwin began expressing his theory of natural selection in the late 1830s then worked quietly on it for twenty years. Throughout those years he communicated briefly with Alfred Russel Wallace, who was exploring the wildlife in South America and Asia. Wallace provided Darwin with birds for his studies. Wallace then sent his theory in 1858 to Darwin, which to Darwin's surprise almost replicated his theory. Charles Lyell and Joseph Dalton Hooker organized for both Darwin's and Wallace's theories to be presented to a meeting of the Linnean Society in 1858.
Using examples explain how natural selection relates to changes in a population, e.g. the development of bacteria resistant to antibiotics and insects to pesticide
Natural selection changes a population by altering the gene frequency in the gene pool, by making one allele more common or …show more content…
IVF allows the testing of embryos for certain characteristics such as their chromosomal makeup and also testing for genetic diseases that are passed on through families. Couples that carry a genetic mutation can have parental testing done with either amniocentesis at about 16 to 18 weeks of pregnancy or with chorionic villus sampling at about 11 to 12 weeks to see if the baby is affected with the genetic condition. The couple then has the option of terminating the pregnancy if the baby is affected with the
Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. It is the process in which organisms better adapted to their environment manage to survive, meaning that they breed more offspring that have their genetic characters, while those less adapted tend to be eradicated.
What are the names of the scientists who first proposed the theory?
Charles Darwin began expressing his theory of natural selection in the late 1830s then worked quietly on it for twenty years. Throughout those years he communicated briefly with Alfred Russel Wallace, who was exploring the wildlife in South America and Asia. Wallace provided Darwin with birds for his studies. Wallace then sent his theory in 1858 to Darwin, which to Darwin's surprise almost replicated his theory. Charles Lyell and Joseph Dalton Hooker organized for both Darwin's and Wallace's theories to be presented to a meeting of the Linnean Society in 1858.
Using examples explain how natural selection relates to changes in a population, e.g. the development of bacteria resistant to antibiotics and insects to pesticide
Natural selection changes a population by altering the gene frequency in the gene pool, by making one allele more common or …show more content…
IVF allows the testing of embryos for certain characteristics such as their chromosomal makeup and also testing for genetic diseases that are passed on through families. Couples that carry a genetic mutation can have parental testing done with either amniocentesis at about 16 to 18 weeks of pregnancy or with chorionic villus sampling at about 11 to 12 weeks to see if the baby is affected with the genetic condition. The couple then has the option of terminating the pregnancy if the baby is affected with the