The Grants did experiments that demonstrated
that each species on Daphne chooses mates of their own species over other species
. … The song of 5110 was different from the songs of other bird species on the island. The Grants performed genetic testing on 5110 and determined that he was homozygous for a rare allele.
Which of the following is a core component of the biological species concept quizlet?
Terms in this set (333) The biological species concept is primarily based on:
reproductive isolation
. All living organisms have evolved from a single common ancestor.
Do you still think lions and tigers are separate species?
Lions and tigers live on different continents and differ in many ways. In nature, they do not hybridize, or interbreed. Therefore, according to the biological species concept,
lions and tigers are separate species
.
Does reinforcement increase the number of intermediate phenotypes?
Reinforcement increases the number
of intermediate phenotypes. Reinforcement decreases the morphological difference between two incipient species. Reinforcement is also called dispersive selection. … The populations will be able to interbreed even though they are different species.
What are some problems with the biological species concept?
In summary, the major limitations of the biological species concept are that it is irrelevant to allopatric speciation and is inapplicable to: (1)
fossil species
; (2) organisms reproducing asexually or with extensive self-fertilization; and (3) sexual organisms with open mating systems (species that freely hybridize).
Can tigers mate with lions?
Lions and tigers are two different species. They look different, they have different lifestyles, they vocalize differently, and they generally live on different continents. Yet
when they are brought together artificially, they can interbreed
. Such hybrids are called tions and ligers.
Can a liger have babies?
Ligers have lion fathers and tiger mothers. They usually grow much larger than their parents, and female ligers
(sometimes called ligresses) can sometimes have babies
. … In general, however, ligers are gentle, even-tempered and tolerant.
Which of the following statements best describes a limitation of the biological species concept?
Which of the following statements best describes a limitation of the biological species concept?
The biological species concept cannot be applied to fossils
because the biological species concept uses reproductive isolation to define species. … There are, instead, several species and their geographic ranges overlap.
Which of the following is a core component of the biological species concept?
Baker and Bradley (2006) defined a genetic species as a “group of genetically compatible interbreeding natural populations that is genetically isolated from other such groups.” While the core aspect of the Biological Species Concept is
reproductive isolation
, the key element at the basis of the Genetic Species Concept …
Which species concept is used for classifying fossils?
The evolutionary species concept
, in which a species is a lineage evolving separately from others, was proposed by GG Simpson to allow fossils to be classified as species as well as living organisms.
Is geographic isolation Prezygotic or Postzygotic?
Prezygotic isolation
occurs before the formation of a zygote can take place. In most cases mating does not even occur. Forms of prezygotic isolation include spatial, behavioral, mechanical and temporal isolation. Postzygotic isolation occurs after members of two different species have mated and produced a zygote.
What type of natural selection is reinforcement?
Reinforcement is
a process of speciation where natural selection increases the reproductive isolation
(further divided to pre-zygotic isolation and post-zygotic isolation) between two populations of species. This occurs as a result of selection acting against the production of hybrid individuals of low fitness.
Which species is most closely related to species W? A)
V
is most closely related to species W.
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.
What is this biological concept?
The biological species concept is the most widely accepted species concept. It defines
species in terms of interbreeding
. … “species are groups of interbreeding natural populations that are reproductively isolated from other such groups.”
What is a biological species example?
According to the most widely used species definition, the biological species concept, a species is
a group of organisms that can potentially interbreed, or mate, with one another to produce viable, fertile offspring
. … For example, when a female horse and a male donkey mate, they produce hybrid offspring called mules.
