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Describe how homology supports the idea that species have changed over time (with examples).

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Describe how homology supports the idea that species have changed over time (with examples).

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Compare and contrast absolute and relative dating of fossils.

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Compare and contrast absolute and relative dating of fossils.

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difference: absolute dating gives us a more specific age of fossils, relative is only a comparison, did it come before or after another fossil.

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Deduce why fossils of soft organisms, such as jellyfish, are extremely rare.

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Deduce why fossils of soft organisms, such as jellyfish, are extremely rare.

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Cause they have no bones
bacteria decomposes their soft tissue

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Absolute Dating
Relative dating:
Homology:
Homologous Structures:
Divergent Evolution:
Vestigial Organs:
Bioinformatics

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Should we use genetic technology to bring back extinct species? Discuss your point of view

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Should we use genetic technology to bring back extinct species? Discuss your point of view

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no, they're dead for a reason.
Yes, it'd be so cool

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Justify or refute this statement: ‘Australians have a responsibility to conserve their unique species’. 

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Justify or refute this statement: ‘Australians have a responsibility to conserve their unique species’. 

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Yeah, we introduced the foreign species that is a major threat to our unique wildlife. We should do something to help them.

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Does the evidence cited suggest there is more benefit to a species to reproduce asexually or sexually? Use information in the article to defend your answer. 

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Does the evidence cited suggest there is more benefit to a species to reproduce asexually or sexually? Use information in the article to defend your answer. 

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sexually - more variation, organisms can adapt better through natural selection.

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In paragraph 1 the term evolutionary selection is used. Try to explain what this means.

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In paragraph 1 the term evolutionary selection is used. Try to explain what this means.

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selection by evolution.
natural selection, evolves changes over time to better adapt to environmental changes.

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Explain what is meant by sexual selection?

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Explain what is meant by sexual selection?

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production of offspring from the most attractive male/female - strength of favourable genes

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more variation in the population
population more suited to environment
stronger gene pool

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What disadvantage of sexual reproduction was cited by one of the scientists?

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What disadvantage of sexual reproduction was cited by one of the scientists?

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competition between males
less efficient at producing large number.

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How much variation would you expect to see in a species where very large numbers of offspring are produced by asexual reproduction?

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How much variation would you expect to see in a species where very large numbers of offspring are produced by asexual reproduction?

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Not much - as offspring are identical to parent

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What is the advantage to a species when very large numbers of offspring are produced?

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What is the advantage to a species when very large numbers of offspring are produced?

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More competition for mates, leads to stronger offspring. More chance of species survival. Less competition against other species.

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Evolution:
Extinction:
Fossil:
Organism:
Species:
Asexual Reproduction:
Sexual Reproduction:

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DO HUMANS SHARE GENES WITH EVERY LIVING ORGANISM ON EARTH?

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DO HUMANS SHARE GENES WITH EVERY LIVING ORGANISM ON EARTH?

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WHY DO AUSTRALIAN ANIMALS DIFFER FROM AFRICAN ANIMALS?

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WHY DO AUSTRALIAN ANIMALS DIFFER FROM AFRICAN ANIMALS?

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WHY HAVE SOME SPECIES BECOME EXTINCT WHEN OTHERS HAVE NOT?

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WHY HAVE SOME SPECIES BECOME EXTINCT WHEN OTHERS HAVE NOT?

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- Process of an organism adapting to become stronger and a better version of itself.
- Species changing and evolving over time.
- Adaptation
- Stuff getting better at life, over time.

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WHAT DO FOSSILS HAVE TO DO WITH EVOLUTION?

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WHAT DO FOSSILS HAVE TO DO WITH EVOLUTION?

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- To show where organisms have lived.
- Show how organisms have changed over time.
- Show progression of organisms over time.
- Piece of evidence that determines development of characteristics, age of fossils and preserve traces of animals, plants, etc and how they have changed.
- They show extinct animals and the characteristics that change or have changed over time.
- Show that evolution exists and how organisms have evolved over time.