Evolution Flashcards
Why are advantageous traits more likely to be passed onto offspring?
Because they are more likely to survive and reproduce.
What causes variation between organisms?
Genetics and the environment
The Theory of Evolution was proposed by what scientist?
Charles Darwin
A change in a gene can produce a relatively rapid change in a species if the environment changes. What is this change called?
Mutation
What word describes a trait that helps an organism survive in its environment?
Adaptations
Which of these is an example of evolution by natural selection?
Bacteria becoming resistant to antibiotics
What are alleles?
Alleles are different versions of the same gene.
These moths are all the same species. The differences between their wings is an example of ________________
Variation
Evolution means…
Change over time in a population.
Why is the mouse population changing over time?
The hawks eat more light mice than dark mice because they can see the light mice more easily
Do organisms “decide” to evolve and change?
No, they change because of natural selection
Variation always exists in a population.
True
Individual organisms within a particular species may show a wide range of variation because of differences in their ……..?
Genes
Similar looking species such as horses, zebras, and donkeys
Can’t interbreed to produce fertile offspring.
What is a species?
A group of organisms that can interbreed to produce fertile offspring.
