Quiz 4

Question 1

helping others despite a cost to ourselves is called __________ behavior

Answer 1

altruistic

Question 2

strands of heredity material are called ___________

Answer 2

chromosomes

Question 3

twins that develop from two eggs are called __________________ twins

Answer 3

dizygotic

Question 4

we call a gene _______ when a single copy is sufficient to produce its effect

Answer 4

dominant

Question 5

the field of __________________ studies changes in gene expression as a result of environmental influences.

Answer 5

epigenetics

Question 6

sections of hereditary material that control chemical reactions that direct development are called ______________

Answer 6

genes

Question 7

an estimate of the variance within a population that is due to heredity is called __________

Answer 7

heritability

Question 8

twins that develop from a single fertilized egg are called ______________ twins

Answer 8

monozygotic

Question 9

whereas, we call a gene _______ when two copies of the gene are required

Answer 9

recessive

Question 10

genes located on the X or Y chromosome are called _____________ genes

Answer 10

sex-linked

Question 11

whereas genes that occur equally in both sexes but which exert their effects mainly in one or the other are called ____________ genes

Answer 11

sex-limited

Question 12

changes in single genes are called _______

Answer 12

mutation

Question 13

after cells have differentiated as neurons or glia, they ________

Answer 13

migrate

Question 14

the mechanism of fetal alcohol syndrome probably relates to ________

Answer 14

apoptosis

Question 15

the concept that neurons refine their many connections based on which ones are most successful is known as ___________

Answer 15

neural darwinism

Question 16

brain cells that are neither neurons nor glia, but which are capable of dividing and then differentiating into neurons or glia, are called ________

Answer 16

stem cells

Question 17

an evolutionary psychologist would likely be most interested in studying ______________

Answer 17

the altruistic behavior of meerkats

Question 18

closed head injury results in damage partially because of ________

Answer 18

forces that push the brain against the inside of the skull

Question 19

which event is the most common cause of a stroke?

Answer 19

ischemia from an obstruction of an artery

Question 20

what process is occurring when a primitive neuron begins to develop dendrites and an axon?

Answer 20

differentiation