BIOL3200 QUIZ 5 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
Ernst Mayer species definition
Group that breeds in the group and not out of the group
Applies to small part of life
Theodore Szjhafskdjh
Just because there are so many transitional phases doesn't mean we shouldn't
recognize the end product as a product of bioloogical diveristy.
Things in steady state
Only really applies to eukaryotes
Mallet and why he doesn't agree with species
Today an essential species 'reality' strongly conflicts with our understanding of gradual
speciation, and is no longer accepted at all generally
Middle ground of species vs no species
Plants where 30% may hybridize commonly and are thus not "discontinuous"
Asexual reproducing entities or those that use both sexual and asexual reproduction
Some species are real while others are less discrete
Species definition problem alternatives
- Are species realties of nature?
- Are they simply theoretical constructs of the human mind?
What is the purpose of species being real or not
, species designation required for conservation statuss
Endangered species act 1973
Species had to be pure for classification, could not be hybrid
Hybridization pros and cons
Can save a population
Difficult to protect
Florida panthers hybridization
If we save them but realize they are hybrid then it doesn't matter if they survive.
Haldane species concept
the concept of a species is a concession to our linguistic habits and neurological
mechanisms
A dispute as to the validity of a species distinction is primarily a linguistic rather than a
biological one
Darwin species concept
Drawing boxes around 'species' is silly
Problems with species existing
Describing, cataloguing and researching "species" relies on the assumption that they
exist
Paradox of speciation
Selection should not favour species formation
Selection shoudl not favor incompatibility as it stops gene flow
Ernst Mayer: Bio species concept, fragile, only if gene flow impossible.
WITH COMPLETE SOLUTIONS VERIFIED
Ernst Mayer species definition
Group that breeds in the group and not out of the group
Applies to small part of life
Theodore Szjhafskdjh
Just because there are so many transitional phases doesn't mean we shouldn't
recognize the end product as a product of bioloogical diveristy.
Things in steady state
Only really applies to eukaryotes
Mallet and why he doesn't agree with species
Today an essential species 'reality' strongly conflicts with our understanding of gradual
speciation, and is no longer accepted at all generally
Middle ground of species vs no species
Plants where 30% may hybridize commonly and are thus not "discontinuous"
Asexual reproducing entities or those that use both sexual and asexual reproduction
Some species are real while others are less discrete
Species definition problem alternatives
- Are species realties of nature?
- Are they simply theoretical constructs of the human mind?
What is the purpose of species being real or not
, species designation required for conservation statuss
Endangered species act 1973
Species had to be pure for classification, could not be hybrid
Hybridization pros and cons
Can save a population
Difficult to protect
Florida panthers hybridization
If we save them but realize they are hybrid then it doesn't matter if they survive.
Haldane species concept
the concept of a species is a concession to our linguistic habits and neurological
mechanisms
A dispute as to the validity of a species distinction is primarily a linguistic rather than a
biological one
Darwin species concept
Drawing boxes around 'species' is silly
Problems with species existing
Describing, cataloguing and researching "species" relies on the assumption that they
exist
Paradox of speciation
Selection should not favour species formation
Selection shoudl not favor incompatibility as it stops gene flow
Ernst Mayer: Bio species concept, fragile, only if gene flow impossible.
