B15 - Genetics and evolution
Independent learning
Introduction
Task 1: Know
Task 1a: Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic
Learn
Set 2&3 go to task 4 now
Task 2: Development of genetic theory - Set 1 only
Task 2b: Make notes that:
Describe Lamarck’s theory of evolution
Watch the video on slide 12 and answer the questions
Summarise the differences between Darwin and Lamarck’s theories of evolution
State the role Alfred Wallace played in developing Darwin’s ideas
List reasons why Darwin’s theory of evolution was not accepted straight away.
Task 2c: Flamingos feed on organisms that live in mud at the bottom of lakes.
• Leopards prey on flamingos.
• Flamingos find it difficult to fly if their feathers get wet.
Flamingos have evolved very long legs.
How would each of the following theories explain the evolution of these long legs?
(a) Darwin’s theory
b) Lamarck’s Theory
Task 2d: Answer the exam question and self mark
Task 3: Development of genetic theory (continued) - Set 1 only
Task 3b: Make notes that:
Describe the work Gregor Mendel did
Watch the video on slide 23 and answer the questions
Complete the genetic cross on slide 24 and self mark using slide 25
Explain why Mendel’s work was not accepted initially
Describe why the discovery of DNA was important and define epigenetics.
Watch the summary video on slide 31
Define speciation
Describe the stages involved in speciation
Task 3c : Complete Progress quiz 1
Task 4: Evidence for evolution (All sets)
Task 4a: Read through the slides:
Task 4b:
Describe the stages of fossil formation
Give the conditions needed for a fossil to form when an organism doesn’t decay
List the reasons why there are gaps in the fossil record
Explain why fossils are evidence for evolution
Define extinction and list the causes (biotic and abiotic)
Define mass extinction and give two ways it could be caused.
Task 4c: Answer the exam questions and self mark
Task 5: Antibiotic resistance
Task 5b: Make notes that:
Describe how antibiotic resistance occurs in bacteria
List the ways we can try to prevent antibiotic resistance occurring
Answer the questions on slide 13
Describe the graph on the left
Suggest explanations for the trends you described
Task 5c: Penicillin is an antibiotic which stops bacteria from reproducing. It was used a lot in the past to treat bacterial infections in humans and other animals. In many hospitals there are now strains of penicillin resistant bacteria.
Explain how natural selection could have produced these strains of penicillin resistant bacteria
Task 5d: Complete progress quiz 2
Task 6: Classification
Task 6b: Make notes that:
Define classification and explain why it is important
Give the order of classification that was proposed by Carl Linneaus
Watch the video on slide 12 and answer the questions
Define a species
Name the 6 kingdoms
Name the three domains proposed by Carl Woese and explain why classification was changed to the domain model
Describe why evolutionary trees are useful
Task 7: Summary
Task 7a: Complete the seneca learning unit for your set.
Task 7b: Watch the video
Task 7c: Make a mind map or single page revision summary of this topic and add it to your revision folder. Use the specification to help you: