1. Explain why genetic variation is necessary in order for evolution to occur. 2. On an island chain in the Pacific Ocea
Posted: Thu Jun 09, 2022 12:58 pm
1. Explain why genetic variation is necessary in order for
evolution to occur.
2. On an island chain in the Pacific Ocean, you come across
a number of species of butterflies. The species are all similar
enough that they probably all share a common ancestor, yet
different enough to be classified as separate species. How does the
theory of evolution by natural selection explain how these
butterfly species arose? How did they get to the islands? What
events and processes might have led to this diversity in this
situation?
3. Define the terms monophyletic, polyphyletic and
paraphyletic. A monophyletic taxon provides the most information
about the evolutionary history and relatedness of a group of
species. What are some of the reasons why we might still be using
polyphyletic and/or paraphyletic trees, even though they are not
ideal? (7 marks)
4. In your own words, explain the five
observations and three inferences that underlie Darwin’s theory of
evolution by natural selection. (8 marks)
can refer to Textbook : Peter Russell, Paul Hertz, Beverly
McMillan, Brock Fenton, Denis Maxwell, Tom Haffie, Bill Milsom,
Todd Nickle, Shona Ellis Biology_ Exploring the
Diversity of Life-Nelson Cengage Adapted (2018)
evolution to occur.
2. On an island chain in the Pacific Ocean, you come across
a number of species of butterflies. The species are all similar
enough that they probably all share a common ancestor, yet
different enough to be classified as separate species. How does the
theory of evolution by natural selection explain how these
butterfly species arose? How did they get to the islands? What
events and processes might have led to this diversity in this
situation?
3. Define the terms monophyletic, polyphyletic and
paraphyletic. A monophyletic taxon provides the most information
about the evolutionary history and relatedness of a group of
species. What are some of the reasons why we might still be using
polyphyletic and/or paraphyletic trees, even though they are not
ideal? (7 marks)
4. In your own words, explain the five
observations and three inferences that underlie Darwin’s theory of
evolution by natural selection. (8 marks)
can refer to Textbook : Peter Russell, Paul Hertz, Beverly
McMillan, Brock Fenton, Denis Maxwell, Tom Haffie, Bill Milsom,
Todd Nickle, Shona Ellis Biology_ Exploring the
Diversity of Life-Nelson Cengage Adapted (2018)