Change over time in the traits of a species
What is Evolution?
The survival and reproduction of the organisms that are genetically best fit for their environment
What is the definition of Natural Selection?
Variation within a species comes from these two places
What is sexual reproduction and mutations?
A theory (explanation) supported by evidence for how populations change over time
What is evolution?
The variety of dog and cat breeds that we have today are a product of _________ _____________.
What is Artificial Breeding (Selective Breeding)
The record of life on earth that scientists examine to prove evolution has occurred
What is the fossil record?
Evolution can only occur is this is involved
What is Genetic Variation?
If a species has more variation within its population, what does this mean for its chances of survival?
More variation leads to a higher chance for survival
Evolution can proceed quickly if these conditions are met
What is fast reproduction and rapid environmental change?
If two organisms share a large amount of similar DNA, this means _______________
They are closely related
Why is the appearance of autotrophs on earth so important to life as we now know it?
They have a the ability to make their own food? (photosynthesis)
Two different organisms are alike and share much of their DNA- this means that they share a _________________
What is a Common Ancestor?
If bacteria have the ability to survive and reproduce in the presence of an antibiotic, they are said to be ___________
What is resistant?
In embryology, if two embryos are very similar to each other
They share a common ancestor?
What is competition?
A struggle for resources within a population of organisms