Final: Origins of LIfe

Question 1

What is a scientific theory?

Answer 1

Theory has been tested multiple times; explanation supported by scientific evidence

Question 2

What is evolution?

Answer 2

Descent with modification

Question 3

What does it mean that evolution addresses unity, diversity, and complexity of life?

Answer 3

Unity: parts of your cells and the way they work aren’t much different from Panda cells. Universal things on the molecular level that are common to all life
Diversity: gross anatomy theres lots of difference kinds of life; Dandilions and trees are basically the same molecularly but very different on a gross scale
Complexity of life: evolution is not guided

Question 4

What is descent with modification?

Answer 4

evolution
all organisms share fundamental common features inherited from a dingle ancient ancestor

Question 5

What are homologous features and what do they tell us about evoultuon?

Answer 5

they are common/shared across different organisms
tells us about relationships in evolutionary time

Question 6

What is an adaptation?

Answer 6

small changes that help to suit a population to the environment
remarkable but not perfect

Question 7

What did Lamark propose and why was he wrong?

Answer 7

thought organisms could inherit acquired characteristics
was wrong because acquired traits don’t get passed down