Question 1

__________ enable(s) __________ to occur.

Accepted Answer

A)  DNA; chromosomes 
B)  Chromosomes; genetics 
C)  Genes; heredity 
D)  meiosis; protein synthesis 
E)  adenine; guanine

Question 2

The Cri-du-chat syndrome is

Accepted Answer

A)  an example of a genetic disorder caused by a mutation. 
B)  due to missing genetic material in chromosome pair 5. 
C)  a genetic disorder that is unresponsive to any sort of treatment intervention. 
D)  due to excessive genetic material in chromosome pair 5. 
E)  caused by an extra 21st chromosome.

Question 3

Specific genes exist for specific behaviours.

Accepted Answer

A) True 
 B)False

Question 4

Brown eye-colour is determined by a dominant trait.

Accepted Answer

A) True 
 B)False

Question 5

Two of the most important evolutionary developments in early hominids favoured by natural selection were encephalization and bipedalism.

Accepted Answer

A) True 
 B)False

Question 6

When Tryon adopted out "bright"rats by allowing them to be reared by "dull"mothers, he found that these bright rats

Accepted Answer

A)  made more errors than the dull offspring of these mothers. 
B)  made about the same number of errors as the dull offspring of these mothers. 
C)  made fewer errors than the dull offspring of these mothers. 
D)  were not able to navigate the maze at all. 
E)  made about the same number of errors as the dull offspring raised by bright mothers.

Question 7

Two barriers to the study of the effects of heredity on behavioural traits in humans are

Accepted Answer

A)  lack of technology and difficulty in obtaining subjects. 
B)  certain ethical restrictions and variability in human environments. 
C)  lack of technology and certain ethical restrictions. 
D)  problems with the measurement of behavioural traits and the fact that twins are often unwilling to participate in genetic research. 
E)  traits are polygenic and difficulty in obtaining subjects.

Question 8

Intense, often physical, competition among males is a characteristic of

Accepted Answer

A)  monogamy. 
B)  polygyny. 
C)  polyandry. 
D)  polygynandry. 
E)  all reproductive strategies.

Question 9

The homozygous offspring of heterozygous mice have two normal alleles and can never have the white tail and feet of their parents.

Accepted Answer

A) True 
 B)False

Question 10

The synthesis of protein molecules that regulate the biological and physical development of the body and its organs is directed by

Accepted Answer

A)  different sequences of adenine, thymine, guanine, and cytosine. 
B)  hormones produced by different DNA combinations. 
C)  meiotic synthesis of enzymes. 
D)  ionic substances located on chromosomes 1 through 9. 
E)  genotypes and phenotypes.

Question 11

__________ are the most common type of subjects used in concordance research.

Accepted Answer

A)  Rats 
B)  Non-human primates 
C)  Twins 
D)  People with brain damage 
E)  Children

Question 12

Which of the following statements is TRUE?

Accepted Answer

A)  Heritability refers to the amount of variation in a given trait in a given population at a given time. 
B)  The tendency of given trait to be passed from parent to offspring is called heritability. 
C)  Heritability is a concept that is useful in understanding variation in a given trait in given individuals. 
D)  Highly heritable traits are not modifiable by environmental factors. 
E)  Heritability refers to the amount of variation in a given trait that cannot be explained by genetic factors.

Question 13

Michael is 48 years old and is dying. His mental and physical abilities have gradually deteriorated over the past 12 years. He no longer can control his motor abilities. What genetic disorder is Michael likely to have?

Accepted Answer

A)  Down syndrome 
B)  Huntington's disease 
C)  Cri-du-chat syndrome 
D)  PKU 
E)  XYY syndrome

Question 14

Proximate causes are those variables in a current environment that affect behaviour.

Accepted Answer

A) True 
 B)False

Question 15

The gene for hemophilia is carried on the sex chromosomes, which makes the disorder an example of a __________ gene

Accepted Answer

A)  sex-limited 
B)  sex-linked 
C)  sex-related 
D)  sex-influenced 
E)  sex-typed

Question 16

A recessive allele will influence the expression of a trait only when it

Accepted Answer

A)  is paired with another recessive allele. 
B)  forms a heterozygous gene combination with another recessive allele. 
C)  forms a homozygous gene combination with a dominant allele. 
D)  is paired with a dominant, but weak allele. 
E)  is contributed by the male parent.

Question 17

DNA contains

Accepted Answer

A)  genes. 
B)  chromosomes. 
C)  proteins. 
D)  enzymes. 
E)  nucleotides.

Question 18

Altruistic behaviour toward non-relatives can be explained by

Accepted Answer

A)  inclusive fitness. 
B)  reciprocal altruism. 
C)  non-kin selection. 
D)  personal fitness. 
E)  nonfamilial altruism.

Question 19

The reproductive strategy in which parental investment is shared, but not always equal is

Accepted Answer

A)  monogamy. 
B)  polygyny. 
C)  polyandry. 
D)  polygynandry. 
E)  parental involvement is shared in all reproductive strategies.

Question 20

Heritability is a term used to refer to

Accepted Answer

A)  inheritability. 
B)  the probability that a trait is due to genetic factors. 
C)  heredity. 
D)  the amount of variability in a trait in a given population that is due to genetic factors. 
E)  the amount of variability in a trait in a given population that is NOT due to genetic factors.

Exam 3: Evolution, Heredity, and Behaviour

enable(s) to occur.

The Cri-du-chat syndrome is

Specific genes exist for specific behaviours.

Brown eye-colour is determined by a dominant trait.

Two of the most important evolutionary developments in early hominids favoured by natural selection were encephalization and bipedalism.

When Tryon adopted out "bright"rats by allowing them to be reared by "dull"mothers, he found that these bright rats

Two barriers to the study of the effects of heredity on behavioural traits in humans are

Intense, often physical, competition among males is a characteristic of

The homozygous offspring of heterozygous mice have two normal alleles and can never have the white tail and feet of their parents.

The synthesis of protein molecules that regulate the biological and physical development of the body and its organs is directed by

__________ are the most common type of subjects used in concordance research.

Which of the following statements is TRUE?

Michael is 48 years old and is dying. His mental and physical abilities have gradually deteriorated over the past 12 years. He no longer can control his motor abilities. What genetic disorder is Michael likely to have?

Proximate causes are those variables in a current environment that affect behaviour.

The gene for hemophilia is carried on the sex chromosomes, which makes the disorder an example of a __________ gene

A recessive allele will influence the expression of a trait only when it

DNA contains

Altruistic behaviour toward non-relatives can be explained by

The reproductive strategy in which parental investment is shared, but not always equal is

Heritability is a term used to refer to