Mutations
An example of an internal factor that can cause a mutation
DNA replication or Meiosis
Factors that limit the survival of populations
Environmental Pressures
Genetically Modified Organism
Charles Darwin
These are organisms or structures that are no longer needed but were used by ancestral species.
vestigial structures
An example of an external factor that can cause a mutation
Define "Species"
Group of closely related organisms who can produce fertile offspring.
Define artificial selection
Breeding of plants & animals to produce desired trait
Survival of the fittest
These are traces or remains of organisms that lived long ago.
Fossils
Definition of mutation
Random change in genetic material
Define "Scientific Theory"
Explanation for the natural world supported by evidence.
Give an example of artificial selection
Define fitness
How well suited an organism is for its environment
Birds, butterflies and bats- which are mos closely related and how do you know?
Birds & Bats
Give an example of a beneficial mutation (explain why it's helpful)
*Various Answers*
Process by which organisms change over time as a result of heritable traits
Evolution
Give an example of a benefit of raising GM crops
Heath, end hunger, cheaper, decreased pesticides, highly tested, very precise.
The original source of all variation in populations
Mutations
Embryological similarities support the notion that all living things descended from a ______ _____.
Common ancestor
Give an example of a harmful mutation (explain why it is harmful)
*Various answers*
Define "adaptation"
Characteristic caused by mutation that is retained & passed to offspring
Give an example of a risk of raising GM crops
Unknown consequences, health risks, hurts small farmers, harm environment...
Evolution does not just require survival, organisms must ___________.
Reproduce
1 DNA: ATTGCCCAATT
2 DNA: ATTGCCAAATT
3 DNA: ATTCCCCGCC
Which of these species is more closely related and how do you know?
1 and 2 because they have more DNA similarities.