Advantages:
Morphology can be readily observed, in many cases without handling or harming the organisms
. It is relatively easy to communicate with a whole range of people about morpohology. Disadvantages: This species concept has several disadvantages.
What is the morphological species concept?
The morphological species concept
relies on morphological data and emphasizes groups of physical traits that are unique to each species
. These lines of evidence are not mutually exclusive and so multiple species concepts may be used together to define species boundaries.
What is an advantage that a phylogenetic species concept has over the biological species concept?
-The phylogenetic species concept has two distinct advantages: (1) it can be applied to any population (fossil, asexual, or sexual) (2) it
is logical because different species have different synapomorphies only if they are isolated from gene flow and have evolved independently
.
What is a disadvantage of the biological species concept quizlet?
Disadvantages of the Biological Species Concept. –
Can’t always be applied
. – Fertile offspring requirement can’t be tested. – Cannot be applied to organisms that reproduce asexually or fossil species that no longer are able to reproduce. Advantages of the Phylogenetic Species Concept.
What are the disadvantages of the morphological species concept?
The morphological species concept definitely has its limitations. First,
it does not distinguish between species that are actually produced by convergent evolution and are not really closely related
. … It is much more accurate to use behavior and molecular evidence to determine what is the same species and what is not.
What are disadvantages of speciation?
- Cannot be taken for fossil records.
- Absent in asexual species.
- Only applied to populations that are geographically isolated.
Which pair of organisms are most closely related?
Organisms 2 and 3
are most closely related because they have the same family name.
What are the 3 species concepts?
The concept of species is an important but difficult one in biology, and is sometimes referred to the “species problem”. Some major species concepts are:
Typological (or Essentialist, Morphological, Phenetic) species concept
. Typology is based on morphology/phenotype.
Which species concept is most used?
The most common species concept in the biological literature is Mayr’s [1970]
Biological Species Concept
. The Biological Species Concept defines a species taxon as a group of organisms that can successfully interbreed and produce fertile offspring.
Why is it important to define species?
To Mayr, the key to identifying species is
determining whether there is shared reproduction within a population of organisms and whether there are barriers to reproduction with other organism
. Mayr called this idea of defining species on the basis of reproduction the Biological Species Concept, or BSC.
What is paleontological species concept?
paleontological species concept. paleontological species concept. Definition
of species based on morphological differences known only from the fossil record
.
Why is biological species concept the best?
The biological species concept explains why
the members of a species resemble one another, i.e. form phenetic clusters
, and differ from other species. When two organisms breed within a species, their genes pass into their combined offspring.
What is the difference between typological and morphological species concept?
Phenetic Species Concept (morphological species concept): a set of
organisms
that look similar to each other and is distinct from other sets. … Typological Species Concept: a group of organisms conforming to a common morphological plan, emphasizing the species as an essentially static, non-variable assemblage.
What is biological species concept?
A biological species is
a group of organisms that can reproduce with one another in nature and produce fertile offspring
. … Taxonomy is a scientific system that classifies organisms into categories based on their biological characteristics. Species can also be defined based on a shared evolutionary history and ancestry.
What is the phylogenetic concept?
(PSC) The concept of
a species as an irreducible group whose members are descended from a common ancestor and who all possess a combination of certain defining, or derived, traits
(see apomorphy). Hence, this concept defines a species as a group having a shared and unique evolutionary history.
What is a potential problem with the PSC phylogenetic species concept )?
What is a potential problem with the PSC (phylogenetic species concept)? … It
fails to recognize many monophyletic species
. It leads to the recognition of a much smaller number of species than the biological species concept. It cannot be applied to organisms that reproduce asexually.
