The Major Issues

Question 1

Biological Psychology

Answer 1

Study of the physiological, evolutionary and developmental mechanisms of behavior and experience.

Question 2

Genes

Answer 2

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

Question 3

Chromosomes

Answer 3

Strands of genes

Question 4

Dexyribonucleic acid (DNA)

Answer 4

double-stranded molecule that is part of the chromosomes

Question 5

Ribonucleic acid (RNA)

Answer 5

a single-stranded chemical

Question 6

Enzymes

Answer 6

biological catalysts that regulate chemical reactions in the body

Question 7

Homozygous

Answer 7

having two identical genes for given characterisitc

Question 8

Heterozygous

Answer 8

having two unlike genes for a given trait

Question 9

Dominant gene

Answer 9

gene that shows a strong effect in either the homozygous or heterozygous condition

Question 10

Recessive gene

Answer 10

one that shows effects only in the homozygous condition

Question 11

Sex-Linked gene

Answer 11

gene on either the X or the Y chromosome

Question 12

Autosomal genes

Answer 12

all chromosomes other than X or Y

Question 13

Sex-limited genes

Answer 13

gene that exerts its effect primarily in one sex because of activation by androgens or estrogens, although members of both sexes may have the gene

Question 14

Mutation

Answer 14

a heritable change in a DNA molecule

Question 15

Epigenetics

Answer 15

A field that deals with changes in gene expression without modification of DNA sequence

Question 16

Monozygotic twins

Answer 16

derived from one egg

Question 17

Heritability

Answer 17

estimate of the degree to which variation in a characteristic depends on genetic variations in a given population

Question 18

Phenylketonuria (PKU)

Answer 18

a genetic inability to metabolized the amino acid phenylalanine

Question 19

Artificial Selection

Answer 19

a process of selecting plants/ animals for desired traits

Question 20

Evolutionary Psychology

Answer 20

field that deals with how behaviors evolved

Question 21

Altrusic Behavior

Answer 21

an action that benefits someone other than the actor

Question 22

Kin Selection

Answer 22

selection for a gene that benefits the individual’s relatives

Question 23

Reciprocal altruism

Answer 23

helping others who may be helpful in return

Question 24

Dizygotic twins

Answer 24

Fraternal (non-identical) twins derived from two eggs