A human appendix, whale hipbones, and a skink's legs are examples of ____.
The fact that certain blood proteins are found in most animals shows what kind of evidence?
How MOST species living today have been able to survive changes in their environment and successfully reproduce.
Change in populations over time
Scientist who first made observations of natural selection.
Type of isolation where a physical barrier separates species such that they cannot reproduce. If environments are different, different traits may emerge via natural selection.
The ability of offspring to reproduce
Similar function, but different structure. bat wing and bird's wing for example
Fitness of individuals highest in the middle of the normal distribution curve is called _____.
Genetic disorder that supports evolution by natural selection because it promotes resistance to malaria.
Similar structure, but different function. Human arm/hand, cat leg/paw, and bat wing.
Down
Which process produces the MOST variation within a species?
An inherited characteristic that increases an organism's ability to survive and reproduce in its specific environment
Fitness of individuals highest at BOTH extreme ends of the normal distribution curve is called ____ selection or disruptive selection.
A resistance acquired through breastfeeding newborns.
The resistance developed in an organism by its own production of antibodies in response to an exposure to an antigen, a pathogen, or to a vaccine.
Fitness of individuals at one extreme end of the normal distribution curve describes what kind of selection?
When farmers select the largest hogs, the fastest horses, or the cows that produce the most milk for breeding it is called _____ selection.
In which populations does genetic drift most often occur?
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