Natural Selection 1
What is natural selection?
Species that are best adapted to their environment are able to reproduce
Fill in the blank: survival of the _____
Fittest
What causes evolution?
Natural selection over generations
True or false: evolution happens quickly and can change in one generation
False
What does common descent suggest?
All species, living and extinct, are related
What is an adaptation?
Any inherited characteristic that increases an organisms chance of survival
True or false: all living things on earth, alive and extinct, came from the first species to walk the earth
True
What did Charles Darwin discover?
Natural selection via different characteristics in tortoises
what is evolution?
When a population changes over time to better suit their environment
Are mutations random?
Yes
Which animal are humans most related to?
Chimpanzees
Humans participating in selection through selective breeding of plants and animals.
Is evolution and survival of the fittest the same thing?
No
True or false: Survival of the fittest is which determines which species is the strongest
False
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
Who was the naturalist that traveled the world to study plants and animals?
Charles Darwin
What is the evidence for common descent? name one
Comparative anatomy, fossil record, embryology and development and DNA comparison
Fill in the blank: Organisms with traits that _____ their chances of surviving and reproducing in their environment tend to leave more offspring
Increase
Is the case of the peppered moth an example of artificial or natural selection and why?
Artificial selection, because the rise in population with the specific moths grew rapidly because of manmade changes in environmental factor
What is the difference between natural selection and artificial selection?
Natural selection is not changed by humans, artificial selection is controlled by humans to have a specific outcome
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 phenotype that makes them taller will be more likely to survive because they have easier access to food.
Which of the following is an example of adaptation?
A. polar bears with white fur
B. a human learning a new language
C. a tree losing its leaves in winter
D. both A and C
D. Both A and C
Fill in the blank: Natural selection over many generations creates ______
Evolution
What is a population?
A species that lives and inbreeds within a specific area
Why is it important to take your antibiotics on time?
If not taken on time, the antibiotic will not kill the bacteria that can reproduce and evolve; eventually, the bacteria will not be affected by the antibiotic since they have built up resistance.