11.1 Review of Natural Selection
Both gray and black squirrels eat the same diet. They can also interbreed and produce fertile offspring. They are considered what?
What is species
This type of natural selection favors average individuals in a population
What is Stabilizing selection?
This term creates new alleles or genetic traits
What is mutations?
The process that changes the gene pool just because of chance and affects small populations the most
What is genetic drift?
the "parent" species from which two or more separate species evolved from
What is common ancestor?
Different breeds of dogs have different type of fur. Poodle has soft, curly fur and bulldog has short, course, straight fur. What concept is described by these different types of fur?
What is genetic variation?
This type of natural selection favors organisms with an extreme form a trait.
What is Directional selection?
Why aren't adult albino alligators not found in the wild?
What is the young are easily seen and eaten by predators?
The movement of an organism into a new population or location
What is immigration?
The accumulation of differences that results in the formation of different species from a common ancestor
What is divergent evolution?
A species of sea turtle digs a nest and lays over 100 hundred eggs. Only around 10% of the eggs will produce offspring and reach adulthood. What term describes how sea turtle populations are shaped by natural selection?
What is overproduction?
This type of natural selection favors individuals with extremes in both directions and eliminates the traits in the middle
What is disruptive selection?
Arctic hares have many predators. Only the fastest and most alert hares survive. The survival and reproduction of the fastest and most alert hares is an example of what
What is natural selection?
The movement of an organism away from a population or location
What is Emigration?
The separation of a population due to a physical barrier; can result in speciation
What is Geographic isolation?
This is another term for evolution; the idea that all organisms share a common ancestor but that species change over time due to natural selection of favorable adaptations
What is Descent with modification?
What is directional selection?
Selective breeding does what to diversity
What it is it decreases genetic diversity?
This is a genetic drift that results when a new colony is formed by a small population with a limited gene pool
What is Founder Effect?
The rapid diversification and speciation from a single common ancestor often seen on islands
What is adaptive radiation?
The process of nature that favors organisms that are best adapted to their environment
What is natural selection?
What is disruptive selection
A farmer uses insecticide on his crops to kill flies. Most of the flies die, but some survived. What is most likely to occur the following year if the farm uses the same insecticide again?
What is the insecticide will not be effective in killing the surviving flies and their offspring?
What is Bottleneck effect?
This type of reproductive isolation occurs when species have different reproductive cycles
What is Temporal isolation?