BYU Bio 130 Exam 3 Questions And
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Directional Selection - ✔️✔️Form of natural selection in which the entire curve moves;
occurs when individuals at one end of a distribution curve have higher fitness than
individuals in the middle or at the other end of the curve
Allopatric Speciation - ✔️✔️The formation of a new species as a result of an ancestral
population's becoming isolated by a geographic barrier.
Biological Species Concept - ✔️✔️Defines a species as members of populations that
actually or potentially interbreed in nature, not according to similarity of appearance.
Although appearance is helpful in identifying species, it does not define species.
Biological Species Concept - ✔️✔️Species are groups of actually or potentially
interbreeding natural populations, which are reproductively isolated from other such
groups
Allopatric - ✔️✔️From the Greek for "Different Countries"
Allopatric Speciation - ✔️✔️
Alternative Strategy - ✔️✔️a mating strategy used by males or females that differs from
the prevailing strategy of the sex
Alternative Strategy - ✔️✔️Example: High-backed pygmy swordtail populations have
some males who develop early in order to mate faster.
Altruistic Interaction - ✔️✔️Recipient befits/actor (Organism) is harmed. Opposite of
Selfish Interaction.
Bateman's Principle - ✔️✔️The sex which invests more in the young becomes a
resource for which other members of the less parental sex compete
Bateman's Principle - ✔️✔️Variance in the reproductive success of males is greater
than that of females, this is ultimately the result of anisogamy.
Behavior - ✔️✔️The way an organism reacts to changes in its internal condition or
external environment.
