Natural Selection 1
Natural Selection 2
Evolution 1
Evolution 2
Natural selection and evolution
100
What is natural selection?
Species that are best adapted to their environment are able to reproduce
100
Fill in the blank: survival of the _____
Fittest
100
What causes evolution?
Natural selection over generations
Changing environments
100
True or false: evolution happens quickly and can change in one generation
False
100
What does evolution prove?
All species, living and extinct, are related
200
What is an adaptation?
Any inherited characteristic that increases an organisms chance of survival
200
True or false: all living things on earth, alive and extinct, came from the cell that formed 3.7 billion years ago
True
200
The passing of a physical traits of organisms in the same species
What is heredity
200
what is evolution?
When a population changes over time to better suit their environment
200
_______ reproduction leads to greater genetic diversity through random mutation and new allele combination
sexual
300
What adaptation do finches have and how does it help them?
Finches have different shaped beaks to let them access the food that is most readily available
300
Explain which mouse is better adapted to this environment.
The grey mouse is better adapted to this environment. Its fur color blends in with the environment and therefore is not seen by predators.
300
Differences among physical traits of organisms in the same species
What is Genetic Variation?
300
What is a population?
A species that lives and inbreeds within a specific area
300
In an arctic habitat; are white foxes or grey foxes more likely to survive and why?
White foxes are more likely to survive becase their white coats help them blend into the snow
400
What is a species?
Organisms that are similar enough they can breed together and have healthy babies
400
What is the evidence for evolution? name two (we learned 5 this unit
Anatomy, Paleontology, Biochemistry, Biogeography, and Embryology
400
Fill in the blank: Organisms with traits that _____ their chances of surviving and reproducing in their environment tend to leave more offspring
Increase
400
How is Molecular biology evidence of Evolution?
Scientists see similar DNA, proteins/biomolecules (LIKE CITRIC ACID) identical genes, and methods of heredity in similar organisms
400
Describe a trait that would benefit an organism's natural selection for reproduction but not natural selection for survival.
Answers may vary. Example:
Crickets calling attracts females but also predators.
Bright colored feathers are attractive to female birds but cause the male birds to stand out to their predators.
500
In an environment with food that grows on trees; are animals with long legs more likely to survive than animals with short legs and why?
Yes, animals with long legs, necks or any trait that makes them taller will be more likely to survive because they have easier access to food.
500
True or false : populations evolve, not individuals.
True
500
Fill in the blank: Natural selection over many generations causes ______
Evolution
500
How does natural selection of this population cause evolution?
The environment chooses the gray mouse trait to be more advantageous in this population. Over time, this population will change because the gray mouse trait will become more common than the tan mouse trait.
500
Use of antibiotics soap can actually be bad! Using antibiotcs can actually make it harder to kill bacteria in the long run- why do you think this is?
Answers may vary -
The antibiotics kill all bacteria, except the resistant ones
Those resistant bacteria survive and reproduce
Eventually the entire population of bacteria will be resistant to the antibiotic