Why did people object to Darwin’s theory? Religion, people believed god made the world, not enough evidence and there was no way to explain inheritance as genetics was not known about. How did Lamarck’s theory differ from Darwin’s? He thought organisms acquired the advantageous characteristics during their life and passed them on. Why is it important to study the similarities and differences between living organisms? These studies help us to understand the evolutionary relationships between different organisms. Describe the process of natural selection. Variation –populations of organisms have variations. Over-production –produce more young than will survive to adulthood. Struggle for existence – competition for survival between the organisms Survival – those with advantageous characteristics are more likely to survive Advantageous characteristics inherited – better adapted organisms are more likely to reproduce successfully passing on the advantageous characteristics to their offspring in their genes. Gradual change – over a period of time the more individuals with the advantageous characteristics in the population. What does an evolutionary tree show? Relations ships between different organisms and where they originated from. What is a species? A group of similar organisms that can breed to produce fertile offspring What is classification? Grouping organisms to show how closely they are related.
Why did people object to Darwin’s theory? Religion, people believed god made the world, not enough evidence and there was no way to explain inheritance as genetics was not known about. How did Lamarck’s theory differ from Darwin’s? He thought organisms acquired the advantageous characteristics during their life and passed them on. Why is it important to study the similarities and differences between living organisms? These studies help us to understand the evolutionary relationships between different organisms. Describe the process of natural selection. Variation –populations of organisms have variations. Over-production –produce more young than will survive to adulthood. Struggle for existence – competition for survival between the organisms Survival – those with advantageous characteristics are more likely to survive Advantageous characteristics inherited – better adapted organisms are more likely to reproduce successfully passing on the advantageous characteristics to their offspring in their genes. Gradual change – over a period of time the more individuals with the advantageous characteristics in the population. What does an evolutionary tree show? Relations ships between different organisms and where they originated from. What is a species? A group of similar organisms that can breed to produce fertile offspring What is classification? Grouping organisms to show how closely they are related.