Test 1 Flashcards

1
Q

Natural selection

A

Process in which individuals that have certain inherited trait tend to survive and reproduce at higher rates than do other individuals because of those traits

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2
Q

Artificial selection

A

Humans have mimicked the process of natural selection for thousands of years by breeding plants and animals to develop desired characteristics

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3
Q

Divergent evolution

A

Closely related species that have similarities because of common ancestry, example wolf to fox and domestic dogs

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4
Q

Convergent evolution

A

Similarities are seen among organisms in species not closely related due to similar selective pressure and adaptations not direct ancestry, example birds, butterflies, bats have no common winged ancestors

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5
Q

Fossil record

A

Dated by association with geologic strata

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6
Q

Continental drift

A

Plate tectonics

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7
Q

Phylogeny

A

Study of evolutionary relationship of species or groups of species

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8
Q

Systematics

A

Method of classifying organisms an determining their evolutionary relationships

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9
Q

Taxonomist

A

Scientists who classify organisms and designs taxonomist systems

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10
Q

Hierarchy

A

Domain, kingdom, phylum, class, order, family, genus , species

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11
Q

Genus

A

May contain more than one species

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12
Q

Family

A

Contains similar species in different genera

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13
Q

Order

A

Includes related familes

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14
Q

Class

A

Many orders

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15
Q

Phylum

A

Many classes

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16
Q

Kingdom

A

May phyla

17
Q

Domain

A

Archae, bacteria , eukarya

18
Q

Sister taxa

A

Groups that share an immediate ancestor nor shared with any other group

19
Q

Basal taxon

A

Group found at the base of a tree that diverged from all other early in thier evolutionary history

20
Q

Cladistics

A

System using common ancestry to classify organisms

21
Q

Shared ancestral characteristic

A

Originated in an ancestor and is shared by all members of the clade

22
Q

Shared derived characteristic

A

novelty unique
to a certain clade (synapomorphy.) Only mammals have hair.

23
Q

Monophyletic

A

contains the ancestral
species and all of its descendants.

24
Q

Polyphyletic

A

when it contains many
distantly related species, but not the most recent common ancesto

25
Q

Paraphyletic

A

contains the
ancestral species and some, but not all, descendants

26
Q

PARSIMONY

A

tree which is the simplest, with the least evolutionary
events, is the most parsimonious.

27
Q

LIKELIHOOD

A

a concept testing trees against the expected change of
DNA sequences over time

28
Q

Protists

A

Group of diverse unicelllar eukaryotes

29
Q

Linnaean system of.2 kingdoms

A

Animal and plants

30
Q

Eukaryotic cell

A

Nucleus, linear chromosomes, ribosomes, mitochondria, cytoskeleton, endoplasmic reticulum, Golgi bodies,

31
Q

Cyanobacterium

A

2 layered membrane

32
Q

Four supergroups of eukarya

A

Excavates, SAR, archaeplastids, unikonts

33
Q

Excavata

A

Modified mitochondria and unique flagella , diplomonads, parabasaids, euglenozoans

34
Q

Diplomonads

A

Reduced mitochondria and anaerobic, 2 equal nuclei and many flagella, giardia intestinalis

35
Q

Parabasalids

A

Reduced mitochondria, some energy anaerobicallyy , trichonympha

36
Q

Euglenozoans

A

Rd within the flagella , 2 subclasses, kinetoplastds and euglenids

37
Q

Kinetoplastids

A

Single large mitochondria contains mass of DNA called kinetoplast trypanosoma is an example (sleeping sickness)

38
Q
A