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WorksheetsU8FV2 Speciation
Total questions: 12
Worksheet time: 6mins
Two distinct species can never...
Share the same niche
Have gene flow
Be pre-zygomatically isolated
Experience artificial selection
If two populations of frogs are separated by a canyon, they are experiencing...
Post-zygotic reproductive isolation
Pre-zygotic reproductive isolation
Trisomal isolation due to abnormalities
Monosomal isolation due to abnormalities
Humans have breed pugs with the most squashed in faces. Over generations, this has produced a pug that can barely breath. What kind of selection is this?
Artificial selection
Survival of the fittest
Sexual selection
Post-zygotic reproductive selection
Which of these is not describing a type of artificial selection?
Farmers select the tastiest apples and breed just those
Breeders select the chihuahuas with the largest eye balls to breed
Leopards select the oldest wildebeest to hunt and eat
Ranchers will only breed sheep with the fluffiest, softest fur
Two populations of finches, that live on the same island, sing different songs and therefore never breed together. Over time, what might we expect to occur?
Sympatric speciation
Allopatric speciation
Chromatic isolation
Saccharitic speciation
"Zygote mortality" refers to when the newly fertilized egg (the zygote) dies due to incompatibility between its parental genetics. What kind of isolation is this?
Pre-zygotic isolation
Post-zygotic isolation
Geographic isolation
Temporal isolation
Which of the following describes a type of geographic pre-zygotic reproductive isolation?
Two populations of llamas are separated by a mountain range
Apple trees pollinated with orange tree pollen produce non-viable seeds
Female black-footed boobies will not breed with blue-footed booby males
Two populations of crickets have distinctly different mating songs
"Sym" means the same. What is the same in sympatric speciation?
The populations live in the SAME place
The populations have the SAME mating rituals
The populations have the SAME genome
The populations will evolve in the SAME way
In an imaginary island with only great Danes and chihuahuas, what might happen eventually and why?
Sympatric speciation; the two populations won't interbreed
Allopatric speciation; the two populations won't interbreed
Artificial selection; the two populations will be forced to interbred
"Temporal" means time. If two populations are temporally reproductively isolated, what could this mean?
They breed at different times of the year
They sing different songs
They live in different regions
One is already extinct
What might prevent gene flow between two populations of zebras?
A raging river that cannot be crossed, dividing the two populations
Hunters that selectively shoot and kill only the youngest zebras
Identical haploid numbers in the gametes of these populations
A rare recessive coloration that makes some zebras purple
The morphology of insect genitalia has been described by scientists as a "lock and key" in that the mating parts of male insects will only work with the mating parts of the females of their species. So, a fruit fly and a house fly cannot mate together due to...
Pre-zygotic reproductive isolation
Post-zygotic reproductive isolation
An abundance of gene flow
An abundance of extra alleles
