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