1: Systematics Flashcards

1
Q

Define Systematics

A

Study of biology diversity, the relationships between organisms (trees) & their evolutionary history

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2
Q

Cladogram

A

Diagram that shows the relationships between organisms

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3
Q

Phylogram

A

Branching diagram showing inferred evolutionary relationships, (length of branches represent genetic distance)

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4
Q

Hierarchical Categories

A
Kingdom
Phylum/Division
Class
Order
Family
Genus
Species
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5
Q

Suffix

1) Kingdom
2) Phylum
3) Class
4) Order
5) Family

A

1) Plantae
2) …phyta
3) …sida
4) …ales
5) …ceae

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6
Q

A Monophyletic Group

A

a terminal clade which consists of a group
of species with a single common ancestor and all its descendants;
(all species in a genus should have a common ancestor),
(all genera in an order should have a common ancestor)

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7
Q

A Paraphyletic Group

A

has a common ancestor but not all the

descendants

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8
Q

A Polyphyletic Group

A

has two or more ancestors

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9
Q

A Homologous Group

A

has a common origin, but not a necessarily a
common function
(Monophyletic group)

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10
Q

An Analogous Group

A

has a common function, but not a common origin

result of convergent evolution

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10
Q

An Analogous Group

A

has a common function, but not a common origin

result of convergent evolution

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11
Q

Convergent evolution

A

process whereby distantly related organisms independently evolve similar traits to adapt to similar necessities.

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12
Q

Polymerase Chain Reaction (PCR)

3 Steps at 30 - 40 cycles

A
1) Denaturation
(1 min at 94* C)
2) Annealing
(45 seconds at 54* C
3) Extension
(2 mins at 72* C
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