04. Evolution of Populations

04. Evolution of Populations - 1/14/2009 1 The modern...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 1 The modern synthesis, synthetic theory of evolution, or Neo-Darwinism, combines natural selection with the principles of Mendelian principles of Mendelian genetics 2 What is a gene pool? • What is an allele? • What is the role of mutation? 3 Mutation – a heritable change in the genetic material • gene mutation – deletions, insertions, substitutions, duplications in nucleotide sequence • horizontal gene transfer – genes are transferred from one species to another • gene duplication – duplicated gene may mutate without affecting original • exon shuffling – mixing of parts of genes 4 Microevolution: • Mutation - increases genetic variation • Natural Selection - changes allele frequencies Adaptation - the result of natural selection • Genetic drift – decreases genetic variation, changes allele frequency 5 Which forms of natural selection result in evolutionary change? environment
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

04. Evolution of Populations - 1/14/2009 1 The modern...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online