Workman Reader Ch. 3 Flashcards Preview

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Flashcards in Workman Reader Ch. 3 Deck (11):

sexual selection

Sexual selection applies to those characteristics that provide
individuals with advantages in gaining access to mates.


female choice

"intersexual choice"; when competition to be chosen by the female is the driving factor for mating


parental investment

asymmetries between the sexes in
the amount of effort that each parent puts into raising the offspring


handicap hypothesis

Male adornments are chosen
by females for their
conspicuous and costly nature

Females choose males which
show conspicuous and costly
adornments as a sign of
genetic quality

Male features signify
genetic superiority i.e.


parasite theory

adornments evolved to demonstrate to females that they are free from parasites


Muller's ratchet

states that each time a
harmful mutation arises in an individual in an asexual population it will be
passed on to all of its offspring


tangled bank

The Tangled Bank Hypothesis proposes that sex evolved in order to prepare offspring for the world around them.


the Red Queen

proposes that organisms must constantly adapt, evolve, and proliferate not merely to gain reproductive advantage, but also simply to survive while pitted against ever-evolving opposing organisms in an ever-changing environment.


arms race

a continual evolutionary battle


intrasexual selection

when same-sex competition is a primary driver for mating


runaway feature

when one feature "runs away" from its original
function and becomes selected purely on the basis of its attractive qualities.