Definitions Flashcards

1
Q

Classification

A

Arranging organisms into groups based on similarities

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2
Q

Taxonomy

A

The study of classification

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3
Q

Why do we classify organisms

A

Identify species
Predict characteristics
Evolutionary links

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4
Q

Define species

A

Smallest taxonomic group

Able to produce fertile offspring

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5
Q

5 kingdoms

A
Prokaryotes 
Protocitsta
Fungi 
Plantae
Animalia
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6
Q

Sister group

A

Two defendants split off from same node

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7
Q

Node

A

Where a line branches off

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8
Q

Evidence for evolution

A

Fossils- palaeontology
Similarities between animals
Chemical differences between organisms

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9
Q

Divergent evolution

A

Species divert into two different species over time

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10
Q

Variation

A

Difference In characteristics between an organisms

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11
Q

Inter specific variation

A

Differences in organisms in same species

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12
Q

Intraspecific variation

A

Differences between organisms of same species

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13
Q

Continuous variation

A

Characteristic that can take any value

Eg mass

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14
Q

Discontinuous variation

A

Discrete result

Blood type

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15
Q

Polygenic

A

A characteristic controlled by a group of genes

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16
Q

Anitomical

A

Physical features

17
Q

Physiological

A

Processes that take part inside of an organism

18
Q

Evolution

A

Change in allele frequency

19
Q

Natural selection

A

Best suited to environment survive

Pass on genes to next generation