chpt4

Question 1

Behavior genetics

Answer 1

the study of relative power and limits of genetic and environmental influences on behavior

Question 2

environment

Answer 2

every nongenetic influence, from prenatal nutrition to the people and things around us

Question 3

chromosome

Answer 3

threadlike structures made of DNA molecules that contain the genes; we have 46 chromosomes, 23 from each parent

Question 4

DNA

Answer 4

a complex molecule containing the genetic information that makes up the chromosomes

Question 5

genes

Answer 5

the biochemical units of heredity that make up the chromosomes; segments of DNA capable of synthesizing proteins

Question 6

genome

Answer 6

the complete instructions for making an organism, consisting of all the genetic material in that organism’s chromosomes

Question 7

identical twins

Answer 7

develop from a single fertilized egg that splits in two, creating two genetically identical organisms

Question 8

fraternal twins

Answer 8

develop from separate fertilized eggs. They are genetically no closer than ordinary brothers and sisters, but they share a prenatal environment

Question 9

temperament

Answer 9

a person’s true characteristics, emotional reactivity, and intensity.

Question 10

heritability

Answer 10

the proportion of variation among individuals that we can attribute to genes. How easily a trait can be passed on. The heritability of a trait may vary, depending on the range of populations and environments studied

Question 11

molecular genetics

Answer 11

the subfield of biology that studies the molecular structure and function of genes

Question 12

molecular behavior genetics

Answer 12

the study of how the structure and function of genes interact with our environment to influence behavior

Question 13

epigenetics

Answer 13

the study of environmental influences on gene expression that occur without a DNA change

Question 14

evolutionary psychology

Answer 14

the study of evolution of behavior and the mind, using principles of natural selection

Question 15

natural selection

Answer 15

the principle that, among the range of inherited trait variations, those contributing to reproduction and survival will most likely be passed on to succeeding generations

Question 16

mutations

Answer 16

a random error in gene replication that leads to change

Question 17

social script

Answer 17

cultural modeled guide for how to act in various situation

Question 18

interactions

Answer 18

the interplay that occurs when the effect of one factor(such as environment) depends on another factor(such as heredity)

Question 19

culture: the enduring behaviors, ideas, attitudes, values, and traditions shared by a group of people and transmitted from one generation to the next

Answer 19

the enduring behaviors, ideas, attitudes, values, and traditions shared by a group of people and transmitted from one generation to the next

Question 20

norm

Answer 20

an understood rule for accepted and expected behavior. Norms prescribe “proper” human behavior

Question 21

individualism

Answer 21

: a giving priority to one’s own goals over group goals and defining one’s identity in terms of personal attributes rather than group identifications

individualism is valued in most areas of North America, Wester Europe, Australia, and New Zealand.

Question 22

collectivism

Answer 22

a giving priority to the goals of one’s group(often one’s extended family or work group) and defining one’s identity accordingly

Question 23

gender

Answer 23

in psychology, the socially influenced characteristics by which people define men and women

Question 24

sex

Answer 24

in psychology, the biologically influenced characteristics by which people define males and females

Question 25

aggression

Answer 25

any verbal or physical behavior intended to harm someone physically or emotionally

Question 26

relational aggression

Answer 26

an act of aggression(physical or verbal) intended to harm a person’s relationship or social standing

Question 27

x chromosome

Answer 27

the sex chromosome found in both men and women. Females have two X chromosomes; males have one. An X chromosome from each parent produces a female child.

Question 28

Y chromosome

Answer 28

the sex chromosome found only in males. When paired with an X chromosome from the mother, it produces a male child

Question 29

testosterone

Answer 29

the most important of the male sex hormones. Both males and females have it but the additional testosterone in males stimulated the growth of male sex organs during the fetal period and the later development of the male sex characteristics during puberty

Question 30

puberty

Answer 30

the period of sexual maturation, when a person becomes capable of reproducing

Question 31

primary sex chracterisitics

Answer 31

the body structures(ovaries, testes, and external genitalia) that make sexual reproduction possible

Question 32

secondary sex characteristics

Answer 32

non reproductive sexual traits, such as female breasts and hips, male voice quality, and body hair

Question 33

spermarche

Answer 33

males first ejaculation

Question 34

menarche

Answer 34

females first menstral period

Question 35

role

Answer 35

a set of expectations(norms) about a social position, defining how those in position ought to behave

Question 36

gender role

Answer 36

a set of expected behaviors, attitudes, and traits for males or for females

Question 37

gender typing

Answer 37

the acquisition of a traditional masculine or feminine role

Question 38

transgender

Answer 38

an umbrella term describing people who gender identity or expression differs from that associated with their birth sex

Question 39

social learning theory

Answer 39

the theory that we learn social behavior by observing and imitating and by being rewarded or punished