Natural Selection

HideShow resource information
What year was Darwin's origin of the species?
1859
1 of 25
In what did Darwin find adaptive variation in birds?
Beaks
2 of 25
What is the first stage in natural selection that exists naturally?
Variation
3 of 25
Some of this variation is...
Heritable
4 of 25
More... are produced than can ...
Offspring, survive
5 of 25
This leads to ...
survival of the fittest
6 of 25
Such great diversification could lead to...
a new species being created
7 of 25
What are passed from one generation to the next?
Genes
8 of 25
What means individual differences develop?
Alleles
9 of 25
What was used to induce mutations in the case of the fruit fly?
Radiation
10 of 25
What led to the variations in activity cycles (longer or shorter)?
Period gene
11 of 25
What do warbler's display if prevented from migrating?
Restlessness
12 of 25
Therefore what strains can be developed?
Migratory and non-migratory
13 of 25
What selection is related to when animals behave for good of the group?
Group selection
14 of 25
what is one example of this?
Lion's not fighting to the death
15 of 25
What three things does it explain?
Threat displays, population control, dominance heirachy
16 of 25
What is an example of threat displays?
Red deer threat display opposed to fighting
17 of 25
What is an example of population control?
Birds lay less eggs than they can incubate to prevent draining resources
18 of 25
Who presented a theory of dominance heirachy?
Wynne-Edwards
19 of 25
What is the main explanation for dominance heirachy?
It controls population due to submission being detrimental to reproduction
20 of 25
What are three criticisms of group selection?
Traits evolve that detriment group, cheats always prosper and species don't go extinct fast enough
21 of 25
Who said that natural selection operates at individual level?
Darwin
22 of 25
However, if it did why would ... look after ...
Parents, offspring
23 of 25
If populations are ... , why do we ...
Selfish, co-operate
24 of 25
Why do individuals accept ... status
Submissive
25 of 25

Other cards in this set

Card 2

Front

In what did Darwin find adaptive variation in birds?

Back

Beaks

Card 3

Front

What is the first stage in natural selection that exists naturally?

Back

Preview of the front of card 3

Card 4

Front

Some of this variation is...

Back

Preview of the front of card 4

Card 5

Front

More... are produced than can ...

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Evolution resources »