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Final Year Lfsc10🌸 > Evolution > Flashcards

Evolution Flashcards

1
Q

Evolution

A

Natural change of genes over millions of years. It’s the theory that organisms change with the passage of time as a result of natural selection

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2
Q

Geological timescale

A

Is used to record the history of life on earth

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3
Q

Evidence for evolution

A

Fossil records
Biogeography
DNA evidence
Descent with modification
Genetics

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4
Q

DNA evidence

A

The more similar the DNA is is the more the organisms are related

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5
Q

DNA evidence

A

The more similar the DNA is is the more the organisms are related

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6
Q

Things were molecules

A

That had to replicate themselves in order for offspring to be produced, they formed due to extreme conditions at hat time

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7
Q

The moving of tectonic plates to form laurasia and gondwanaland

A

Continental drift

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8
Q

3 eras of the geological times ale

A

Palezoic, mesozoic and canozoic

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9
Q

Before the cambrian period

A

Known as the pre cambrian period

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10
Q

Fossils

A

Are mineralized remains of an. Organism that has lived in the past

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11
Q

Genetic variation

A

Variety of genes that may differ from the maternal and paternal genes resulting in new genotypes and phenotypes

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12
Q

Mutation

A

A sudden change in sequence or oder of nitrogeneous bases of a nuclei acid resulting in declines in genetics inherited

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13
Q

Natural selection

A

Process by which organisms best suited to survive in the environment achieve greater reproduction successing passing advantageous characteristics onto future generations

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14
Q

Palaeontology

A

Study of fossils

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15
Q

Speciation

A

Process where new species are formed form the original population

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16
Q

Transitional fossils

A

Show intermediate characteristics between two genera/species. It has common characteristics to both ancestor species and the descendant species that follow.

17
Q

Useful mutation

A

Advantages to the organisms and are passed from parent to offspring

18
Q

Variation

A

Refers to how organisms differ from each other

19
Q

Variation is caused by

A

Genes and environmental

20
Q

Selective breeding

A

When humans deliberately breed animals or pants together so that they can get the characteristics they want from the organisms

21
Q

How do cells communicate

A

Via the nervous system and hormone system (endocrine system)

22
Q

Variation causes

A

Cancer cell by radiation, carcinogenic and viruses

23
Q

Geological theory

A

Explains how the earth surface changes look now and how they were in the past and what caused the difference to occur

24
Q

Organic molecules

A

Pretend and fatty acids, the molecules are combined to form cell membranes

25
Q

Pangaea

A

It is given to the supercontinent that existed during the palezoic era

26
Q

Why did the dodo bird become extinct

A

The settlers that arrived on the island brought animals like dogs that ate the dodo’s eggs and they chopped down tres where the dodo bird lived and hunted them for food

27
Q

Adaptive evolution

A

Ensures individuals within a species have traits that allow them to survive and reproduce in a habitat

28
Q

Individuals die

A

When they fail to compete for food, reproduce or fight against Predators.

29
Q

Extinction

A

Species that no longer exist due to changes in the environment that reproduces its ability to survive an reproduce

30
Q

Charles dsrwin theory

A

Organisms evolve to adapt to the environment, organisms with adaptive features which allow reproduction and survals of the species while others die out.

31
Q

Trait

A

A distinguishing and inheritable charscteristic of an organism

32
Q

Charles proposed that evolution takes place

A

By natural and sexual selection

33
Q

Lamarckism

A

Things that we learn to inherit and changes were inheritable. Using or not using certain features can cause them to enlarge or shrink and determine if they are passed down to the next generation
Traists are acquired htorugh the overuse and under use of certain body sorts

34
Q

A fossil is

A

Completer organisms or remains, imprints or traces of an organism that is preserved in rocks, they are found in sedimentary rocks fokeed when clays and soil particles are carried from one palace to another

35
Q

Formations of oil

A

Marine organisms die and accumulate in stagnate water lacking oxygen. They are buried by classy to not decays but form hydrogen rich muds broken down by anaerobic bacteria. The oil sips into permeable rocks and gets trapped by impermeable rocks

Final Year Lfsc10🌸 (12 decks)

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