Evolutionary changes that create new species and groups of species are most accurately referred to as
|D)||horizontal gene transfer.|
The inability for two morphologically similar species to interbreed is due to
The concept that the tempo of evolution is sporadic is known as ________________, while the concept that the tempo of evolution is continuous is known as ______________.
|A)||punctuated equilibrium; gradualism|
|E)||conservatism; punctuated equilibrium|
True or False: The comparison of the development of different organisms as a means to study evolutionary relationships between organisms is a field referred to as "evo-devo".
Which of the following does not lead to sympatric speciation?
|C)||Adaptation to local environments|
|E)||All of the choices may lead to sympatric speciation|
Which of the following most accurately defines a lineage?
|A)||A group of individuals capable of successful interbreeding resulting in viable offspring|
|B)||A unique combination of characteristics shared by members of a species|
|C)||The genetic relationship between an individual and its ancestors|
|D)||A group of individuals capable of successful interbreeding resulting in viable offspring and the genetic relationship between an individual and its ancestors A group of individuals capable of successful interbreeding resulting in viable offspring,|
|E)||A unique combination of characteristics shared by members of a species, and The genetic relationship between an individual and its ancestors|
Which one of the following is not an example of a postzygotic reproductive isolating mechanism?
|A)||Fertilization of one species by another|
|B)||Original generation fertile while successive generations become increasingly inviable|
|C)||Hybrid offspring of interspecies are inviable|
|D)||Gametes fail to unite|
|E)||All of the choices are examples of postzygotic reproductive isolation mechanisms.|
True or False: Reproductive isolating mechanisms occur due to genetic changes caused by species adaptation to its environment.
Which of the following reproductive isolating mechanisms is particularly important to flowering plants?
Which of the following statements about allopatric speciation is incorrect?Allopatric speciation
|A)||can occur due to the "founder effect."|
|B)||is believed to be the most common method for cladogenesis to occur.|
|C)||can occur due to slow geological events that produce large geographical barriers.|
|D)||may result from adaptive radiation|
|E)||All of the statements about allopatric speciation are correct.|
True or False: A single ancestral species can evolve into a wide array of descendant species through a process known as adaptive radiation.
True or False: Incomplete geographic separation may result in a hybridization zone.
Which of the following is not an example of sympatric speciation?
|A)||Nondisjunction produces polyploid offspring that can no longer successfully mate with the original species.|
|B)||Neighboring populations of a single species interbreed only in hybrid zones, limiting the gene flow to the point of speciation.|
|C)||Two continuous populations differ in an allele which leads to noncompatible breeding seasons, producing different species over time.|
|D)||Interspecies breeding between already polyploid species|
|E)||All of the choices are examples of sympatric speciation.|
Which of the following events would be likely to cause a rapid (on an evolutionary time scale) change in a gene pool?
|A)||Introduction of a new predator into a population's geographic territory|
|B)||Alloploidy or other change in chromosome number|
|C)||Migration of a population to a new and different environment|
|D)||Genetic mutations that lead to different phenotypic characteristics|
|E)||All of the events would be likely to cause rapid changes in a gene pool.|
A developing webbed bird foot would have
|A)||BMP and gremlin in all areas of the developing limb.|
|B)||BMP in the entire limb, but gremlin only in the interdigit regions.|
|C)||gremlin in the entire limb, but BMP only in the interdigit regions.|
|D)||gremlin in the entire limb, and BMP in all areas except the interdigit regions.|
|E)||BMP in the entire limb, and gremlin in all areas except the interdigit regions.|
True or False: Podos determined that Galapagos finches that evolved large beaks because of their food source are prone to reproductive isolation due to their inability to reproduce effective mating songs.
The pattern whereby different parts of an animal's body grow at different rates with respect to each other is most accurately referred to as
|E)||None of the choices accurately describe the pattern whereby different parts of an animal's body grow at different rates with respect to each other.|
Which of the following is an example of spatial expression of genes?
|A)||Mature salamanders with gills|
|B)||Webbed versus nonwebbed feet in birds|
|C)||Galapogos finches with ineffective mating songs|
|E)||Pea aphids feeding on alafalfa instead of red clover|
Eye development is under control of a master control gene called
True or False: The cascade of eye development in Drosophila involves the action of approximately 2,500 different genes.