21 - Running with the Red Queen

Question 1

What is true predation?

Answer 1

prey is killed

Question 2

What is grazing?

Answer 2

prey is partially consumed

Question 3

What is parasitism?

Answer 3

resources are taken from prey

Question 4

What is the effects of competition

Answer 4

species 1 - negative
species 2 - negative

Question 5

What is mutualism?

Answer 5

Organisms of different species interact with mutual benefits

Question 6

What is co-evolution?

Answer 6

Change in the genetic composition of once species in response to a genetic change in another

Question 7

When does co-evolution occur?

Answer 7

• a tight ecological relationship (specificity)
• reciprocal natural selection

Question 8

When is it co-evolution, and not parallel?

Answer 8

• when it it happening in a repeating loop

Question 9

What is parallel evolution?

Answer 9

species A affects the fitness of species B

Question 10

What are the two types of coevolution?

Answer 10

• mutualistic - adaptation in each species increases the fitness of the other species
• antagonistic - adaptation in each species reduces the fitness of other species

Question 11

What can antagonistic evolution lead to?

Answer 11

• cycles
• escalation / arms race

Question 12

What is red queen coevolution?

Answer 12

have to keep evolving as fast as possible to stay in the same place as before as the other species is continuing to evolve

Question 13

Are selection pressures equal in an arms race?

Answer 13

• no
• stronger selection on species being killed than those loosing food