Today’s Agenda… 3-1 Bellringer: Corrections on yesterday’s bellringer. Review yesterday’s activity BrainPop (2nd Period) Notes on The Role of Genes in Evolution (#4) Hidden Frogs Activity Quiz on Monday – Study! 

Today’s Targets… I can explain how and why species adapt to their environment. I can explain how natural selection leads to diversity. I understand that biological change occurs as a result of small differences between parents and offspring gradually or over many generations.

Genes and Evolution Study Pack #4

The Role of Genes in Evolution Darwin did not know anything about genes or mutations Could not explain the variations or how they were passed on Variations result from mutations in genes or from the combinations of alleles inherited from the parent Only traits that are controlled by genes are acted upon by natural selection

How do new species form? Geographical isolation can cause the formation of a new species Separated by a river, volcano, mountain range Once a group becomes isolated they can no longer mate with the rest of the group

How do new species form? A new species can form when a group of individuals remains separated from the rest of the group long enough to evolve different traits

Continental Drift Geographical isolation has occurred on a wide scale When Pangea split, species became separated and evolved separately