Bio Quiz
Antibiotic resistance in bacteria is an example of
natural selection
In a very small population of birds, assume 5 out of 20 alleles are the type that code for blue feathers. What is the allele frequency of the "blue feather allele" in this population?
.25
Suppose that the only population of a certain reptile species lives on an African mountain. If you prevent all movement of individuals out of this large but isolated population, which of the following describes the most likely future of this reptile population?
Evolution will continue because of mutations, nonrandom mating and genetic drift.
Imagine 4 mice escaping from a research lab. One mouse is blind due to a genetic defect. If the escapees breed, most of the mice born in the subsequent generations are blind from birth. Which of the following terms describes this situation?
Founders effect
Fruit fly species all look similar to each other. If you have a male and female fruit fly, how can you prove they are the same species according to the biological species concept?
If they mate successfully and their offspring can also mate successfully they are the same species.
Which of the following definitions most closely matches the biological species concept?
Members of the same species can mate and produce fertile offspring.
If the tallest and shortest individuals in a population do not survive to reproduce, what is the most likely result?
Stabalizing Selection
The fish in a certain population average 10mm in length. Imagine a population of predatory birds arrives in the area, but cannot eat fish longer than 15mm. After a decade, if the fish average 14 mm in length, what likely happened?
The longer fish survived and reproduced more offspring than the shorter fish.
Which is an example of a postmating isolation?
The offspring of two organisms cannot reproduce.
allele frequency
a measure of the relative frequency of an allele
The Chichlid fish exploded into 300 new species when colonizing Lake Malawi. The Chiclid fish evolved rapidly into several new species to better exploit the resources avaliable in Lake Malawi. This is an example of:
adaptive radiation
Female blue-footed boobies of the Galapagos will only mate after a very specific courtship display on the part of the male. He high-steps to advertise his bright blue feet. What isolating mechanism discourages female blue-footed boobies from mating with other species of boobies?
behavioral isolation
In a certain species of salmon, some adult males are extremely large whereas other adult males are very small, compared to the females. There are no intermediate-sized adult males in the population. This is probably due to
disruptive selection
When the pollen of one plant species can not germinate the flower of another species, it is an example of which type of isolation?
mechanical incompatibility
What Promotes Speciation
geographical isolation.....
What can cause species to become extinct
habitat encroachment (urbanization) ,localized distribution, inability to successfully compete for limited resources
Having great evolutionary fitness means
having more offspring
A mule cannot reproduce to make more mules. What type of isolation is this?
hybrid infertility
Within a large population, if no mutations occur, no migration occurs, all matings are random, and each individual has an equal chance of reproducing, which of the following will probably happen?
no evolution occurs
Which of the following situations could lead to speciation?
populations of species live in different environments and are exposed to different natural selection.
Is any animal more likely to become extinct if it breeds in a large or small area
small area
What term is the phrase "All populations of organisms that can potentially interbreed with one another under natural circumstances and are reproductively isolated from other populations" describing?
species
Bishop pines and Monterey pines coexist in nature. In the wild, they release pollen at different times of the year. Why can't the two organisms produce viable offspring?
temporal isolation
