Section 9 Flashcards

Taxonomy and Phylogenetic trees. ch. 1.5, 18.2 (7 cards)

1
Q

What is the science of systematics?

A

The science of classifying organisms.
(groups similar organism together to show how closely related they are)

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2
Q

What are 2 sources of evidence to know how closely related organisms are?

A
  1. Anatomy (body structure)
  2. Molecular similarities (hereditary information in molecules such as DNA)
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3
Q

What is a derived character?

A

A characteristic found in all the descendants of a common evolutionnary ancestor but not found in the ancestor themselves.

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4
Q

What is a clade? How is it also known?

A

A group of organisms -> include all the organisms that share a derived character from a common ancestor.

  • Monophyletic group
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5
Q

What are phylogenetic trees?

A

Diagrams showing the evolutionary history of a group of organisms.

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6
Q

What are the 8 classes of clades into which organisms are classified in order to make up their taxonomy?

A
  1. Domain ( + inclusive)
  2. Kingdom
  3. Phylum
  4. Class
  5. Order
  6. Family
  7. Genus
  8. Species ( - inclusive)

king rule on the domain. u class in order by families genuses & species

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7
Q

How do you name a species using its scientif name?

A
  1. Genus
  2. Species

(in Latin) when hand-written, underline it

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