Natural Selection
While artificial selection is driven by humans, this process is where nature and the environment decides which animals breed
The process where humans breed plants or animals for specific, desirable traits
What is artificial selection
This type of evidence compares features in different organisms that share a common ancestor, even if they have different functions
What is Homologous structures
This term refers to change over time
What is evolution
Organisms often have more __________ than will survive
What is offspring
Artificial selection has been a big factor in the evolution of this animal
What is a dog
When organisms in separate environments originated from a common ancestor (different continents or islands)
What is geographic distribution
This type of trait is what breeders look for, such as higher speed in horses or more meat in cattle
What is a desired trait
When organisms try to survive and reproduce through limited resources
What is competition
In natural selection, the goal is survival/reproduction; in artificial selection the goal is this.
What is "desired" traits
What is absolute dating
Camouflage
This type of structure found in organisms serves no useful function
What is a vestigial structure
this is small variations between members of the same species, which is required for both natural and artificial selection to work
This is one major disadvantage of artificial selection, which makes a population more susceptible to disease
What is genetic diversity/Variation
This type of evidence is a geological technique used to determine the chronological order of past events, fossils, or rock layers without identifying exact numerical age
What is relative dating
This term refers to a trait that helps an organism survive and reproduce in its environment.
What is adaptation
This term refers to a group of organisms that can interbreed and produce fertile offspring and includes all genetic variations within the species
What is species
Living organisms have ________ with ___________ from species that lived before them (why your sibling looks different from you)
what are descended and modifications
Artificial selection created this specialized goat that stiffens or "faints" when frightened, a trait ranchers found useful for preventing escapes
What is the Fainting Goat
This type of dating compares the shared developmental features among different species
This term refers to a group of organisms of the same species living in a specific area where genetic variations are only present within the specific group in an area
what is population
These microbes are the only predator to humans