ch 15

Question 1

Apomixis

Answer 1

Parthenogenic reproduction in which an individual develops from one or more mitotically produced cells that have not experienced recombination or syngamy

Question 2

Clone

Answer 2

Lineages of individual reproduced asexually, by mitotic division

Question 3

Condition-dependent indicator

Answer 3

Characteristic, usually used in behavior display, that is correlated with, and therefore indicates, the health or physiological vigor of an individual

Question 4

Cost of sex

Answer 4

Usually refers to a reduced rate of population growth of a sexual compared to an asexual population, owing to production of males

Question 5

Dioecious

Answer 5

Of a species, consisting of distinct female and male individuals

Question 6

Hermaphroditic

Answer 6

Performance of both female and male sexual functions by a single individual

Question 7

Parthenogenesis

Answer 7

Virgin birth; development from an egg to which there has been no paternal contribution of genes

Question 8

Runaway sexual selection

Answer 8

Model of sexual selection in which a male display character and female preference for the character reinforce one another so that both evolve to be more extreme

Question 9

Sensory bias

Answer 9

Difference in ability of an organism to perceive different stimuli

Question 10

Sex ratio

Answer 10

Proportion of males among offspring, either of an Individual or a population

Question 11

Sexual reproduction (sex)

Answer 11

Production of offspring whose genetic constitution is a mixture of those of two potentially genetically different gametes

Question 12

Sexual selection

Answer 12

Differential reproduction as a result of variation in the ability to obtain mates

Question 13

Sperm competition

Answer 13

Sperm of two or more males have the opportunity to fertilize a female’s egg

Question 14

Vegetative propagation

Answer 14

Production of offspring from somatic tissues by budding