Speciation Flashcards
Group of populations whose members have the potential to interbreed in nature and produce viable fertile offspring, but do not produce viable offspring with members of other groups.
Species
These are group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Species
It is how a new kind of plant or animal species is created.
Speciation
It occurs when a group within a species separates from other members of its species and develops its own unique characteristics.
Speciation
The gene flow is interrupted when a population is divided into geographically isolated subpopulations.
Allopatric Speciation
It occurs when a species separates into two separate groups which are isolated from one another.
Allopatric Speciation
A _______ such as a mountain range or a waterway, makes it impossible for them to breed with one another.
physical barrier
TRUE OR FALSE?
In Allopatric Speciation, each species develops differently based on the demands of their unique habitat or the genetic characteristics of the group that are passed onto offspring.
TRUE
It occurs in populations that live in the same geographic area.
Sympatric Speciation
It occurs when there are no physical barriers preventing any members of a species from mating with another, and all members are in close proximity to one another.
Sympatric Speciation
TRUE OR FALSE?
A new species, perhaps based on a different food source or characteristic, seems to develop gradually.
FALSE. In Sympatric Speciation, a new species may develop spontaneously.
TRUE OR FALSE?
The theory is that some individuals become dependent on certain aspects of an environment—such as shelter or food sources—while others do not.
TRUE (Sympatric Speciation)
This happens when gene flow is diminished by Polyploidy, Habitat differentiation, Sexual selection.
Sympatric Speciation
a species is spread out over a large geographic area
Parapatric Speciation
TRUE OR FALSE?
Although it is possible for any member of the species to mate with another member, individuals only mate with those in their own geographic region.
TRUE (Parapatric Speciation)