Exam 1: The Major Issues

A strand of DNA serves as a template (model) for the synthesis of ____.

Humans have stopped evolving.

Units of heredity that maintain their structural identity from one generation to another are:

Biological catalysts that regulate chemical reactions in the body are called:

A(n) ____ explanation describes why a structure or behavior evolved as it did.

Which of the following would be the BEST example of altruistic behavior?

A fundamental property is one that ____.

The damaging effects of phenylalanine in children with PKU are unavoidable.

Chemically, what is the route from genes to their expression?

Evolution improves the fitness of the population, which is defined as:

Invertebrate nerves follow the same basic principles as human nerves.

The erections of hairs on the body, most often around arms and shoulders are called:

A(n) ____ explanation would describe eating in terms of the hypothalamus affecting insulin production, which affects the availability of glucose in cells.

According to Tinbergen, a physiological explanation describes why a structure or behavior evolved as it did.

A(n) ____ investigates the chemical reactions in the brain.

In furry animals, the erection of hairs helps the animal:

Research scientists are free to do as they wish when conducting research with animals.

A gene is found that controls the age at which a man grows bald, if at all. That gene seldom affects women, even if they have the gene. What kind of gene is this MOST likely to be?

In certain species of songbirds, development of the song requires the opportunity to hear the appropriate song during a sensitive period in life as well as the genes to prepare them to learn the song. This is a(n) ____ explanation of birdsong.

A ____ helps people with emotional distress or troublesome behaviors, sometimes using drugs or other medical procedures.