14.- Natural Selection

Beschreibung

https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-113
PEDRO ALVAREZ JIMENEZ
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Zusammenfassung der Ressource

Frage 1

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

Frage 2

Frage
What is genetic drift?
Antworten
  • Guided changes in allele frequency
  • Random changes in allele frequency
  • Random changes in gene proportion

Frage 3

Frage
Why the Darwin´s study of beak finches shape was so important?
Antworten
  • 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

Frage 4

Frage
What are the 4 main ideas of Darwin Natural Selection Theory?
Antworten
  • 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

Frage 5

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

Frage 6

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

Frage 7

Frage
Who evolves, individual or population?
Antworten
  • Individual
  • Population
  • Both

Frage 8

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

Frage 9

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

Frage 10

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

Frage 11

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