Final Exam BIO 204

Question 1

Stress Hormone Pathway

Answer 1

hypothalamus –> pituitary gland –> LH acts on testes / ACTH acts on adrenal gland –> testosterone / cortisol

Question 2

Wingfield Challenge Hypotheisis

Answer 2

pattern of male to male interaction and parental care - testosterone production varies depending on level of parental care

Question 3

Associated Reproductive Pattern

Answer 3

hormone signals that regulate reproductive behavior, ex: fruit flies

Question 4

HPA axis

Answer 4

Hypothalamus Pituitary Adrenal

Question 5

HPG axis

Answer 5

Hypothalamus Pituitary Gondads

Question 6

Evolutionary Stable Strategy (ESS)

Answer 6

A behavioral strategy which is used by all/most members of a population the population cannot be invaded by a cheater mutation

Question 7

Pure ESS

Answer 7

V > C

Question 8

Mixed ESS

Answer 8

C > V

Question 9

Alternate Male Mating Strategies

Answer 9

selective pressure that allows multiple forms of male mating strategies to evolve

Question 10

Anisogamy

Answer 10

Sexual reproduction by the fusion of dissimilar gametes

Question 11

Bateman’s Principle

Answer 11

Females are the limiting resource because they invest a few but large/expensive gametes

Question 12

Intrasexual selection

Answer 12

male to male combat and threats

Question 13

Intersexual selection

Answer 13

male courtship of females

Question 14

Sexual dimorphism

Answer 14

intrasexual selection acts on males and males develop larger body size

Question 15

Dominance Hierarchy

Answer 15

male to male competition determines dominate/sub males

Question 16

Benefits of Female Choice

Answer 16

direct, indirect and no benefits

Question 17

Hamilton Zuk

Answer 17

costly traits indicate something about parasite resistance

Question 18

Zahavi Handicap Hypothesis

Answer 18

Honest signal of male quality - only strong males can maintain costly traits

Question 19

Runaway sexual selection

Answer 19

genetic linkage of trait and preference

Question 20

Sensory Drive

Answer 20

pre existing biases / propensity for attraction to trait before that trait exists

Question 21

Polygny

Answer 21

male has multiple female mates

Question 22

Monogamy

Answer 22

both male and female have one mate (social monogamy does not equal gentic monogamy)

Question 23

Polygyandry

Answer 23

multiple males and females

Question 24

Polyandry

Answer 24

female has multiple male mates

Question 25

Eusociality

Answer 25

“true” sociality, division of labor and cooperative breeding

Question 26

Alturism

Answer 26

short term cost to actor and benefit to recipient (long term improved fitness)

Question 27

Inclusive Fitness

Answer 27

rb > c where r = relatedness of actor to recipient, b = benefit to recipient and c = cost to actor

Question 28

Haplodiplody

Answer 28

two chromosome female, one chromosome male