evolution Flashcards

(76 cards)

1
Q

is an unpredictable natural process of change over time with physical change due to genetic modification

A

evolution

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2
Q

what is the change in the physical characteristics of a species over several generations?

A

evolution

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3
Q

evolution relies on the process of ____?

A

natural selection

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4
Q

______ is based on the idea that all species gradually change over time to be able to adapt to the continuous changing in the environment

A

natural selection

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5
Q

what helped the peppered moth in its survival?

A

camouflaging

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6
Q

evolution undergoes rapid changes over generations

true or false

A

false, the population undergoes slow changes over generations.

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7
Q

evolution is unpredictable and natural, these changes occur continuously and gradually

true or false

A

true

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8
Q

evolution doesn’t involve genetic modification

true or false

A

false

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9
Q

____ are preserved remnants of organisms.

A

fossils

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10
Q

____ are one of the richest sources of information about live forms that lived in the past.

A

fossils

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11
Q

what are the 2 ways to determine the age of fossils?

A

stratification
radiometric dating

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12
Q

_____ of sedimentary rocks in which fossils are located can help determine age of fossils

A

stratification

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13
Q

a body will not decompose if it is covered by sediment or volcanic ash

true or false

A

true

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14
Q

Hard elements of a body may be preserved from decomposition even if it is not covered quickly

true or false

A

false, it has to be covered quickly

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15
Q

Occasionally, erosion, uplifting of the earth’s crust, or human excavation may expose fossils to the surface.

true or false

A

true

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16
Q

______ are evidence that provide information about life forms.

A

fossils

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17
Q

______ has common origin, different function (origin of the structure is the same but it has different functions)

A

homologous

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18
Q

_____ has different origin, same function (the body structure has different origin but same function)

A

analogous

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19
Q

_____ body structure has no function but is homologous to other organisms.

A

vestigial

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20
Q

Determining a fossil’s embryology will contribute to its _______

A

classification

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21
Q

____ is determining the similarities between its molecules

A

biochemistry

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22
Q

Similarities in RNA, DNA, and proteins are used as indicators of common ancestry.

true or false

A

true

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23
Q

_______ focuses on studying the distribution of plants and animals around the world.

A

biogeography

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24
Q

________ are rare accidental events that change the nucleotide sequence of a gene.

A

mutations

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25
Non-lethal alleles may be passed to the next and future generations and without mutation, there will be evolution or physical changes in the characteristics of an organism. true or false
false. without mutation, there will be NO evolution or physical changes in the characteristics of an organism.
26
Natural selection is good because it encourages changes in the gene pool enabling an organism to survive in an ever changing environment. true or false
true
27
_____ is a group of individuals of the same species that occupy the same geographical area
population
28
_______ are random changes in allele frequency due to chance events
genetic drifts
29
2 causes of genetic drift
bottleneck and founder effect
30
_____ occurs when a major catastrophe wipes out a large proportion of the population without regard to fitness.
bottleneck effect
31
_________ occurs when a few individuals leave the group and establish a new population.
founder effect
32
______ is the redistribution of alleles due to migration into and out of the population.
gene flow
33
_____ tends to mix pools of genes that might not otherwise mix.
gene flow
34
______ is a phenomenon where a life form dies out completely.
extinction
35
how many major extinctions in thw world?
5 in the last 530 million years
36
The largest mass extinction was during the _______ period.
Permian Triassic
37
Most recent mass extinction took place during the ________ which is a.k.a the end of the Dinosaurs
cretaceous period
38
By looking at the genotypic characteristics of an organism and comparing it with another organism, the best to compare is through evolutionary trees, also known as _______.
phylogenetic trees
39
_____ is used to trace evolutionary change and relationships between species.
evolutionary trees
40
_____ are short bursts of evolutionary activity or the development of new species within a short time.
adaptive radiation
41
Adaptive radiation may simply be traced using a ____
phylogenetic tree
42
In the beginning, earth was too cold for life. true or false
false, too hot
43
The _______ started the evolution of all life forms on earth.
great oxygenation
44
What gases were the most abundant on earth for 4.5 Billion years, therefore making it inhabitable?
harmful gases
45
_____ follows this system where the most general name of an organism is its domain followed by its kingdom, phylum, class, order, genus, and species. (specific to general)
taxonomic classification
46
It has been said that humans share a common ancestor with ______
primates
47
primates and humans only differ in their _____ and _____
genus and species
48
_____ diverged from other primates about 25 MYA.
Hominoid groups
49
These organisms that have the following are called what? ○ larger brains ○ no tail ○ and a more complex social behavior.
Hominoids``
50
Us humans are closest to ______
chimpanzees
51
Appeared in Africa for about 4.4 MYA.
Ardipithecus Ramidus
52
Most likely the first hominid
Ardipithecus Ramidus
53
Thought to be the direct ancestor of modern humans
Australopithecus Afarensis
54
Australopithecus Afarensis appeared in africa 3.2 MYA with _______
Australopithecus Garhi
55
Based on its anatomy and physiology, _______ most definitely walked upright.
Australopithecus Afarensis
56
true or false male Australopithecus Afarensis were larger than the females
false, females were larger this suggests sexual dimorphism
57
Australopithecus Afarensis were followed by the appearance of _____
Homo habilis
58
Homo habilis appeared around __ MYA
2.4 MYA
59
It is the first distinct human ancestor
homo habilis
60
Its name or genus and species means “handy man” as the first stone tools appeared this time
homo habilis
61
They are the first tool maker
homo habilis
62
homo habilis has has thick enamels in the teeth which suggests that this ancestor is a carnivore. true or false
false, It has thick enamels in the teeth which suggests that this ancestor is an OMNIVORE.
63
this came after homo habilis
homo erectus
64
appeared 2 MYA
homo erectus
65
This group is more human looking than the rest
homo erectus
66
homo habilis has longer infancy true or false
false, it is homo erectus with longer infancy
67
Just like homo habilis, it has more brain enlargement based on the shape of its skull.
homo erectus
68
They have been found in parts of Africa, Europe, and Asia. Giving its name out of africa
homo erectus
69
Fossils of the homo erectus group have been discovered along with _____
homo heidelbergensis.
70
The final phase of human development was marked by a substantial increase in brain size.
homo sapiens
71
This group is believed to have developed from Homo erectus and spread out from Africa.
homo sapiens
72
It has replaced all the homo species and is the only surviving homo species.
homo sapiens
73
____ was discovered in Callao Cave, Cagayan Province of the Philippines
Homo luzonensis
74
All humans belong to multiple species, however there are still unique features that distinguish one race from another. These are called racial differences. true or false
false, all humans belong to a single species.
75
_____ are slight changes in the character between subgroups of a common species.
Racial differences
76