evolution Flashcards

1
Q

what were Leclerc’s ideas

A

life forms are unchanging
humans and apes have a common ancestor

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2
Q

what were Cuvier’s ideas

A

paleontology
the study of ancient fossils
catastrophism
occurs when a disruptive event happens causing extinction and replacement with new species

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3
Q

what were Lyell’s idea

A

uniformitarianism
slow and subtle changes resulting in substantial changes in an environment

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4
Q

what were Lamarck’s idea

A

line of descent
old fossils leading to modern species and species increase complexity over time
inheritance of acquired traits
organisms become better adapted to their environment and most used body parts become stronger

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5
Q

what were Weismen’s ideas

A

The only material that can be passed on is the one in our sperm and eggs

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6
Q

what were darwin’s ideas

A

the theory of evolution by natural selection
hoe life has changed and continuously changed earth history
descent with modification
the ability to survive local environmental conditions

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7
Q

fossil records

A

fossils closer to the surface are more alike to species today they are in chronological order

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8
Q

transitional fossils

A

fossils that show intermediate link between a group of organisms

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9
Q

homologous v analogous

A

homologous
body parts that are similar in structure but no in function
analogous
structures with the same function but different internal anatomy

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10
Q

3 types of adaptations

A

behavioural
the things an organism do to survive and reproduce
physiological
permit organisms to perform special functions
structural
physical features of an organisms that help them adapt

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11
Q

mimcry

A

when a prey will mimic a predator to help them survive

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12
Q

adaptations vs variations

A

adaptation
processes that have an organism to survive and reproduce
variations
surgical, behavioural and physiological differences between individuals

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13
Q

mutations

A

permanent changes in the DNA can be positive or negative

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14
Q

selective advantage

A

helps an organisms survive and reptoduce

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15
Q

natural selection v artificial selection

A

artificial
selective pressure from humans in populations in order to improve a mod
natural selecting for individual in a populations

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16
Q

fitness

A

the contribution of an individual creates a gene flow

17
Q

monoculture

A

planting the same plants all over a crop field so if one of them gets the disease

18
Q

gene pool

A

total of all alleles of the next generation

19
Q

monoculture

A

the % of each allele within a populations

20
Q

micro evloutions

A

micro evoloutions
changing persentages of alleles

21
Q

gene flow

A

between 2 different inbreeding populations

22
Q

non-random mating

A

When individuals pick a mate based on phenotypes

23
Q

founder effect

A

when a small part of a population leave to make an isolated one but this often lead to inbreeding

24
Q

the bottle neck effect

A

when a traumatic event happens and wipes out most of the populations when they reproduce this will lead to less variety

25
Q

sexual selection

A

a competition based on mena nd females choices

26
Q

sexual dimorphisms

A

striking difference between males and females within species

27
Q

macroevolution

A

evolutionary changes that occur at the species level

28
Q

species

A

1 or more populations of individuals that can interbreed naturally

29
Q

speciation

A

formation of new species from a existing one

30
Q

behavioural pre zygote

A

prevents other spp. from recognizing

31
Q

temporal

A

2 species that live in the same mating season they will in different areas

32
Q

ecological

A

2 species that live in the same habitat but different mating season

33
Q

mechanical

A

structural difference in reproductive organs

34
Q

gametes

A

if egg and sperm come form 2 different species

35
Q

post zygote
hybrid sterility

A

produced sterile offspring

36
Q

hybrid breakdown

A

when hybrid mates are weak and sertilie

37
Q

hybird inviablilty

A

development ends early and baby dies early

38
Q

sympatric speciation

A

when populations that live in the same habitat diverge and become reproductively loslated

39
Q

allopatric

A

when populations separate goegraphicall barrier and diverge genetically