WorksheetsHesterCh18BIO112
Total questions: 14
Worksheet time: 14mins
Changes in the allele frequency in a population over time
Microevolution
Macroevolution
Speciation
Hybridization
Biological factors (barriers) that impede two species from producing viable, fertile offspring
Macroevolution
Reproductive Isolation
Hybridization
Gene flow
The biological species concept states that:
a species is a group of communities whose members have the potential to interbreed in nature and produce non-viable, infertile offspring; they breed successfully with members of other populations
a species is a group of populations whose members have no chance to interbreed in nature and produce viable, fertile offspring; they breed successfully with members of other populations
a species is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring; they do not breed successfully with members of other populations
a species is a group of populations whose members have no chance to interbreed in nature and produce viable, fertile offspring; they do not breed successfully with members of other populations
Offspring that are crosses between different species are:
Just as cute as offspring of the same species
Impossible, as organisms of different species cannot mate
Cross-zygotic
Hybrids
Prezygotic barriers:
Block fertilization from occurring
Always prevent mating from occurring
Are never successful
Include reduced hybrid fertility
Postzygotic means:
The sperm was able to fertilize the egg
It happened after the Zygotic Era on Earth
Mating was unable to take place
A new species has been created
When species that breed at different times of the day, different seasons, or different years cannot mix their gametes is an example of:
Behavioral isolation
Mechanical isolation
Gametic isolation
Temporal isolation
When sperm of one species may not be able to fertilize eggs of another species, it is an example of:
Temporal isolation
Gametic isolation
Reduced hybrid fertility
Hybrid breakdown
When hybrid offspring are sterile, such as a mule, is an example of:
Reduced hybrid fertility
Hybrid breakdown
A prezygotic barrier
Reduced hybrid viability
When gene flow is interrupted or reduced when a population is divided into isolated subpopulations it is called:
Sympatric speciation
Allopatric speciation
Patrick speciation
Hybrid speciation
The origin of a new species is called:
Natural Selection
Hybridization
Speciation
Genetic Newation
Speciation that takes place when organisms are isolated from each other is:
Allopatric
Impossible
Polyploidy
Sympatric
The presence of extra sets of chromosomes due to accidents during cell division is:
Sympatric speciation
Allopatric speciation
Polyploidy
More common in animals than in plants
The time it takes for a new species to evolve is about 65 years.
True
False
