Animal Behavior

The contribution an individual makes to the gene pool of the next generation, relative to the contribution of oher individuals in the population

A mating system in which a male fertilizes the eggs of several partners in a breeding season

A monogamous mating system that arises because females are able to prevent their partners from securing additional mates

The number of sexual partners an individual acquires during a breeding season

A mating system in which one male mates with one female in a breeding season

A display site that females visit to select a mate from among the males displaying in small resource-free territories

A mating by an individual with someone other then their primary partner in a seemingly monogamous species

The ratio of sexually receptive males to receptives females

A difference in a sexondary sex characteristics between males and females in a species

A consistent variation in the mating behavior of males or females within one population

Actions taken by males (usually) to prevent a sexual partner from acquiring sperm from other males

The competition between males that determines whose sperm will fertilize a female's eggs when both males' sperm have been accepted by that female

Monogamy that arises because males gain more fitness by offering parental care for the offsrping of his mate than by seeking out additional sexual partners

Monogamy that arises because males gain more fitness by preventing one partner from mating with other males than by seeking out additional sexual partners

A mating system in which a female has several partners in a breeding season

Mating with several males reduces the risk that some of the female's eggs will remain unfertilized because any one male may not have sufficient sperm to do the job

Females mate with more than one male because their social partner is of lower genetic quality than other potential sperm donors, whose genes will improve offspring viability or sexual attractiveness

Mating with several males increases the genetic veriety of the sperm available to the female, increasing the chance that some sperm will have DNA that is an especially good match with the DNA of her eggs

More mates mean more resources or parental care received from the sexual partners of a female.

More mates mean greater confusion about the paternity of a female's offpring and thus less likelihood of losing offspring to infanticidal males

Polygynous males acquire several mates attracted to resources under their control

Polygynous males directly defend several mates

Polygynous males acquire several widely scattered mates by finding them first

Polygynous males attract several mates to display territory

Both male and female mate several times with different individuals

The pairing of male and female

Happens when pairs produce and rear only their own genetic offspring

A mating by an individual with someone other than their primary partner in a seemingly monogamous species

Any form of parental behavior that appears likely to increase the fitness of a parent's offsrping

Any form of parental behavior that increases an individual offspring's fitness at a cost to the parent's ability to invest in future offspring

Selection for tratis which are solely concerned with increasing mating success

Strategy which, when adopted by most members of the population, cannot be beaten by any other strategy

Transfer of genetic material between bacteria though direct cell-to-cell contact

Reproduction involving gametes of simial morphology

Sexual reproduction involving gametes of different sizes

Having the male and female sex organs in separate and distinct individuals; having separate sexes

Having both male and female sex organs in the same individual

A characteristics that confers higher fitness to individuals than any other existing alterntive exhibited by other individuals within the population

The ability to recreate lost or damaged tissues, organs and limbs

Asexual repoduction in which a more or less complete new organism simply grows from the body of the parent organism and eventually detaches itself

The production of an organism from an unfertilized egg

The genes contributed by an individual indirectly by helping nondescendant kin, in effect creating relatives that would not have existed without the help of the individual.

The sum of an individual's direct and indirect fitness

An animal that epoilts the parental care of individuals other than its parents

The host and the brood parasites are of the same species

The host and the brood parasites are of different species

The probability that an allele present in one individual will be present in the other as a result of shared ancestry

Consistent behavioral differences among individuals