Genetic variation & Mutation
A change in genetic information.
What is a mutation.
What is natural selection?
Natural selection is how individuals are better adapted to their environment are more likely to survive.
What is adaptation
A change that increases an organisms chances for survival is called.
What is evolution?
Evolution is the gradual change in a species over time.
When all individual organisms of a species have died
Extinction
what is genetic variation?
Slight differences in an organism’s traits that are considered normal
Relationship between mutation and adaptation
The mutation of the gene has become an adaptation.
Adaptation is only physical
False, adaptation can be physical or behavioral
Give examples of evolution.
The process by which species cease to exist is
What is extinction?
This term refers to the availability of different traits and alleles within a population.
What is variation?
Factors of natural selection
Overproduction -Variation -Competition -Selection -Environmental factors
what drives adaptation?
the pressure to survive
What is the theory of evolution?
the theory that all the kinds of living things that exist today developed from earlier types.
What is the purpose of reproduction?
For the survival of the species
Give an example of natural selection and How does genetic variation and environmental factors work together to cause natural selection?
Genetic variation allows some individuals to have better traits for survival than others.
Nature chooses organisms that are ____________.
Stronger or more fit?
A group of fish have been observed to show changes in mouth structure over many generations. What is this change a result of?
Fish adapting to the food source for survival.
Evolution is commonly categorized as this.
What is a theory.
what is the difference between genes and alleles?
genes are sequences of DNA on the chromosome that encode specific traits, whereas alleles are different forms of the same gene
What is a change in a gene that results in a new trait?
What is a mutation?
The concept that members of each species compete regularly for food, space, and other necessities is known as this.
Competition
Give an example of natural selection and How does genetic variation and environmental factors work together to cause natural selection?how it works.
Genetic variation allows some individuals to have better traits for survival than others.
What is the difference between adaptation and evolution?
Adaptations help animals thrive and survive in their environments whereas evolution is changes that happen over a long period of time to the species.
Sometimes called “Survival of the Fittest” Environmental pressures often give an organism with a favorable trait an advantage over other organisms without the trait. The organism with the trait is selected by the pressures and is able to survive and reproduce, but the organism without the trait cannot and is eventually forced into extinction.
natural selection