evolution Flashcards

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1
Q

what is a genotype

A

refers to the genetic makeup of an organism

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2
Q

what is phenotype

A

physical characteristics determined by genes and the environment

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3
Q

what are dominant genes

A

strong
more represntative

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4
Q

what are recessive genes

A

weaker gene
not expressed

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5
Q

what is an example of an environment trigger on genes

A

oxygen level
humidity
light cycle

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6
Q

what is evolution

A

inherited characteristics that are developed in organisms and are evolved slow process

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7
Q

what is natural selection

A

the differential survival and reproduction of individuals due to differences in phenotype

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8
Q

how does natural selection effect population

A

population ill have a higher percentage of survival and less disadvantaged genes

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9
Q

what is a heritable trait

A

many characteristics have a genetic tendent combined with experience in the environment

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10
Q

what is sexual selection

A

a type of natural selection and competition for mates along with the development of characteristics that aid reproductive success drive evolution

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11
Q

what is the role of the pre-frontal cortex

A

regulates our thoughts, actions and emotions

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12
Q

where is the amygdala found

A

in the prefrontal cortex

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13
Q

what is the thalamus responsible for

A

relaying sensory and motor signals as well as a regulation of consciousness and alterness

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14
Q

what is the amygdala responsible for

A

emotional control
memory and learning

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15
Q

what is hypothalamus responsible for

A

releasing hormones, managing sexual behaviour, regulating emotional responses

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16
Q

what is the old brain responsible for

A

its designed to control the most basic functions for life including breathing, attention and motor responses

17
Q

what is the old brain mostly made up of

A

limbic system
prefrontal cortex

18
Q

what is indirect aggression

A

covert (hidden)
e.g gossip

19
Q

what is relational aggression

A

overt (open)
e.g breaking off group

20
Q

why would Brendgen et al criticise the evolutionary explanation of social aggression

A

girls are more socially aggressive
boys are more physically aggressive
nurture not nature

21
Q

why have we evolved our prefrontal cortex

A

to resist jealous impulses as it is now considered as unattractive

22
Q

describe how David Buss (1988) explains how aggression is used to maintain mates

A

males use two retention strategies to control partners- direct guarding (controlling her movements) and negative inducements (prevent her from straying)

23
Q

why does aggression occur in men

A

to acquire status which increases resources and mates, which increases the survival of themselves and offspring

24
Q

describe how Daly and Wilson (1985) supports the explanation of aggression in males

A

males from lower statuses have a high chance of being offenders/victims

most victims/offenders know each other so know each others status

25
Q

why do women have aggression

A

social aggression not physical aggression

social aggressive so the man passes down genes and protection of offspring

detrimental effects on offspring if mother is aggressive

26
Q

describe how Hill & Hurtado (1996) supports the explanation of aggression in women

A

Paraguay children are 5x more likely to die if mother dies and 100% if it happens before the child is 1 year old