14.- Natural Selection

Description

https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-113
PEDRO ALVAREZ JIMENEZ
Quiz by PEDRO ALVAREZ JIMENEZ, updated more than 1 year ago
PEDRO ALVAREZ JIMENEZ
Created by PEDRO ALVAREZ JIMENEZ over 9 years ago
107
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Resource summary

Question 1

Question
How the Industrial Revolution changed the proportion of colors in peppered moth?
Answer
  • By changing the color of trunks
  • By changing the color of moths
  • Contaminating the environment

Question 2

Question
What is genetic drift?
Answer
  • Guided changes in allele frequency
  • Random changes in allele frequency
  • Random changes in gene proportion

Question 3

Question
Why the Darwin´s study of beak finches shape was so important?
Answer
  • It was the first study of Darwin
  • The study showed how finches had evolved
  • It was an example of how finches had adapted to different environment

Question 4

Question
What are the 4 main ideas of Darwin Natural Selection Theory?
Answer
  • Individual variation ,heritable variations, adapted descendants and competition for resources
  • Individual variation, heritable variations, adapted descendants and reproduction
  • Individual variation, heritable variations, too many descendants and natural selection

Question 5

Question
Can you explain the concept of “the struggle for existence”?
Answer
  • Competition among living things for getting food
  • Competition for resources needed to live
  • Competition for reproduction and ensure the survival of the specie

Question 6

Question
According to what Darwin said, is the following sentence true? “Natural selection favors the strongest ones”
Answer
  • True
  • False

Question 7

Question
Who evolves, individual or population?
Answer
  • Individual
  • Population
  • Both

Question 8

Question
Why Darwin was so worry about his family?
Answer
  • Because he was very far away from them
  • Inbreeding resulted in weaker and sickly descendant
  • Inbreeding resulted in infertility

Question 9

Question
Why giraffe´s neck has been growing throughout the evolution?
Answer
  • Because of natural selection against short necks
  • Because of natural selection for long necks
  • Because of natural selection against long necks

Question 10

Question
Smaller babies have more infectious problem and larger babies have problems at labour naturally. This is an example of:
Answer
  • Natural selection for extreme phenotypes
  • Natural selection against extreme phenotypes
  • Natural selection against medium phenotypes

Question 11

Question
What's disruptive selection?
Answer
  • Selection against common traits
  • Selection for common traits
  • Selection for extreme traits without any change in the environment
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