E6 - Evidence for Evolution

Question 1

TRUE OR FALSE: Closely related species share many homologous (similar/same) features, even if they do not serve the same function AND IS AN OUTCOME OF NATURAL SELECTION

Answer 1

TRUE

Question 2

TRUE OR FALSE: Species may have vestigial structures that once served a function in their ancestors AND IS AN OUTCOME OF NATURAL SELECTION

Answer 2

TRUE

Question 3

TRUE OR FALSE Remote islands are inhabited by unique species that are descended from a few individuals who were able to reach the island AND IS AN OUTCOME OF NATURAL SELECTION

Answer 3

TRUE

Question 4

WHAT DID DARWIN CALL HIS IDEAS FOR SPEICES AFTER HIS VOYAGE ON THE BEAGLE

Answer 4

“transmutation of species”

Question 5

Whaat are some peices of evidence that prove evolution?

Answer 5

-Fossils
-homolguous structures

• biogeography
  -direct observation

Question 6

Fossils

Answer 6

• how animals are incrediabily similar

Question 7

-homoguous structures

Answer 7

• many organisms share similiar traits
• can also show us how we are related

Question 8

biogeography

Answer 8

• animals thata re the most similar and most closely realted tend to be found in the same reigons beacuse the evolutaionary change is driven by geographical change

Question 9

direct observartion

Answer 9

-we can directly see the resistance of drugs to chemicals

-bugs are becoming resistant to pesticides

Question 10

microevolution

Answer 10

-allele frequency changes that haooen quickly and in small populations

Question 11

macroevolution

Answer 11

changes that occur over a large period of time

Question 12

Two theories of evolution

Answer 12

1. all living organims eveolved form a common ancestor
2. evoltuion is [owered by natural procceses

Question 13

other ways to prove evolution

Answer 13

embrology- how creatures devlope

compartive anatomy- comparing and finding similarities between living things

DNA- Resrachers can compare DNA code

Question 14

vestigial features-

Answer 14

features that have little to no function

Question 15

anatomcial oddities-

Answer 15

they are atypical variations

-i.e extra toe

Question 16

homologuous features

Answer 16

-struture with common evolutioanry orgigin that may serve different function in modern speices

-closely related species had homologous features as they shared common ancestors

Question 17

analoguous features

Answer 17

• Analogous structures are features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature

Question 18

Competition within Populations

Answer 18

Malthus showed that all populations were limited in size by their
environment—and in particular their food supply. Whatever the conditions, populations could not continue to grow indefinitely

Th ere is a limit to the size of the population that an environment can support. Th e result is competition for survival between
members of the same species.