Sexy Time
You look like me!
F&Mily
Where do you live?
Reinforcement?
100
This concept identifies species based on reproductive isolation where no gene flow occurs between populations that are reproductively isolated from each other
What is biological species concept?
100
This widely applicable concept can be subjective and lead researchers to argue about how much different species may look alike.
What is morphological species concept?
100
This is a trait found in certain groups of organisms that exists in no others.
What is synapomorphy?
100
Splitting of Gondwana ("supercontinent") into multiple continents led to this, which resulted in ratites (type of birds) being separated to ostrich (Africa), emu (Australia), and kiwi (New Zealand).
What is vicariance?
100
Divergent groups come back into contact and evolved differences are maintained. This can be considered an evolutionary response to maladaptive mating behavior.
What is reinforcement?
200
In alpine skypilots (a flowering plant), the length of the floral tube varies. Bees can pollinate in populations with short tubes, but only hummingbirds can pollinate in populations with long tubes. This could be an example of a type of prezygotic isolation.
What is mechanical isolation?
200
Here is an example: The Afrikaner population of Dutch settlers in South Africa is descended mainly from a few colonists. Today, the Afrikaner population has an unusually high frequency of the gene that causes Huntington’s disease, because those original Dutch colonists just happened to carry that gene with unusually high frequency. This is an example of something.
What is founder effect?
200
This testable concept actually defines species by shared evolutionary history, but phylogenies are unavailable for most groups.
What is phylogenetic species concept?
200
Apple maggot flies are currently in the process of becoming distinct species. Switching host plants could be a major trigger for speciation in insect evolution. This is an example of a kind of speciation.
What is sympatric speciation?
200
This is the existence of shared ancestry between a pair of structures, or genes, in different species. A common example structure in evolutionary biology are the wings of bats and the arms of primates.
What is homology?
300
When female fireflies give a species-specific sequence of flashes to attract male fireflies, this type of isolation can occur.
What is behavioral isolation?
300
Eastern meadowlarks and western meadowlarks are almost identical morphologically, but hybrid offspring are largely infertile. Meadowlarks are an example of this species.
What is cryptic species?
300
This group consists of an ancestral population, all of its descendants, and only those descendants.
What is monophyletic group?
300
Even though there is nothing stopping the individuals in the entire population from mixing and mating, that does not happen in this type of speciation. Example: Anthoxanthum odoratum.
What is parapatric speciation?
300
Dolphins and ichthyosaurs look similar but are not closely related - dolphins are mammals; ichthyosaurs are reptiles. This is an example where traits are similar but not inherited from a common ancestor.
What is homoplasy?
400
Offspring of matings between members of different species do not survive or reproduce
What is postzygotic isolation?
400
This disease is an example of heterozygote advantage where it is passed down through families that causes thick, sticky mucus to build up in the lungs, digestive tract, and other areas of the body. It is one of the most common chronic lung diseases in children and young adults. It is a life-threatening disorder.
What is cystic fibrosis?
400
This occurs in cells and organisms when there are more than two paired (homologous) sets of chromosomes.
What is polyploidy?
400
This is also called migration. This is any movement of genes from one population to another. This includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries. If genes are carried to a population where those genes previously did not exist, this can be a very important source of genetic variation.
What is gene flow?
400
Literally translates to "different-homeland"
What is "allopatric"?
500
An evolutionarily independent population or group of populations.
What is species?
500
Hardy Weinberg Equilibrium is happening when these 5 conditions are true.
What is no selection, no drift, no migration, no mutation, random mating.
500
This happens when gene flow is restricted between previously cohesive groups
What is isolation?
500
Suppose there is a population of rabbits. The color of the rabbits is governed by two incompletely dominant traits: black fur, represented by “B”, and white fur, represented by “b”. If this population of rabbits occurred in an environment that had areas of black rocks as well as areas of white rocks, the rabbits with black fur would be able to hide from predators amongst the black rocks, and the rabbits with white fur likewise amongst the white rocks. The rabbits with grey fur, however, would stand out in all areas of the habitat, and would thereby suffer greater predation. This is an example of what.
What is disruptive selection?
500
A group of a particular species that are about to become genetically isolated from the rest of the species, perhaps due a geographical barrier, though at this time can still reproduce with other groups of the species before their gene pools become too distinct.
What is incipient species?
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