IB Biology Topic D4.3.12 Evolution as a Consequence of Climate Change Revision Notes (HL)

IB Biology Topic D4.3.12 Evolution as a Consequence of Climate Change Revision Notes (HL) | RevisionDojo

Written by official IB examiners

Climate change acts as a selection pressure that drives evolution

Definition

Evolution

Evolution is defined as a change in the heritable characteristics of a population over time.

Evolution is a change in the heritable characteristics of a population over generations.
Climate change alters habitats, changing which traits help an organism survive and reproduce.
This makes climate change a selection pressure that can shift allele frequencies in a population.

Definition

Climate change

Long-term shifts in temperature, precipitation, and other environmental factors that can alter the conditions of an ecosystem.

Note

Evolution is not a choice or a conscious decision by an organism.
It occurs through natural selection, where traits that raise survival and reproduction become more common over time.

The tawny owl shows selection favouring different colour morphs as winters warm

Tawny owls (Strix aluco) in Finland occur as two heritable colour morphs: brown and grey.
Colour is controlled genetically, with brown dominant and grey recessive.
Winter survival is what selection acts on, and it depends on snow cover.

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Definition

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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Climate change acts as a selection pressure that drives evolution

Definition

Evolution

Evolution is defined as a change in the heritable characteristics of a population over time.

Evolution is a change in the heritable characteristics of a population over generations.
Climate change alters habitats, changing which traits help an organism survive and reproduce.
This makes climate change a selection pressure that can shift allele frequencies in a population.

Definition

Climate change

Long-term shifts in temperature, precipitation, and other environmental factors that can alter the conditions of an ecosystem.

Note

Evolution is not a choice or a conscious decision by an organism.
It occurs through natural selection, where traits that raise survival and reproduction become more common over time.

The tawny owl shows selection favouring different colour morphs as winters warm

Tawny owls (Strix aluco) in Finland occur as two heritable colour morphs: brown and grey.
Colour is controlled genetically, with brown dominant and grey recessive.
Winter survival is what selection acts on, and it depends on snow cover.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D4.3.12: Evolution as a Consequence of Climate Change Notes

Climate change acts as a selection pressure that drives evolution

The tawny owl shows selection favouring different colour morphs as winters warm

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Climate change acts as a selection pressure that drives evolution

The tawny owl shows selection favouring different colour morphs as winters warm

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics