Elements of natural selection
Natural selection & adaptation part 1
Natural selection & adaptation part 2
Other evolutionary mechanisms
100
One limitation of the model community is that the model lacks pr______________.
predators.
100
Genetic variation could improve s__________al chances over time.
survival
100
Sleeping during the day and being active at night is an adaptation that would most benefit a de___________ organism.
desert
100
The two species of plants do not interbreed even when they grow very close to each other. Which evolutionary process fails to occur?
Ge______ Fl______ between the two species.
Gene flow
200
The ability of frog to lay 1,000 to 5,000 eggs increase the fi____________ of its species.
fitness
200
The outcome of this adaptation in the scarlet king snake is to protect the scarlet king snake from pr__________.
predators
200
Being able to survive, find a mate, and produce offspring best describes fi_________.
fitness or adaptation
200
When the mice from the first population reproduce with members of the second population, the offspring in the second population will have greater Ge_________ variety.
genetic
300
The ability of frog to lay 1,000 to 5,000 eggs increases the probability that some offspring will su_________ long enough to reproduce.
survive
300
The moth’s proboscis size an adaptation for its environment because the moth has little co________ for food.
competition
300
Faster rabbits will survive and re___________ increasing the average speed of the rabbit population due to the introduction of the predator.
reproduce
300
When younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males?
Ge_______ F_______ occurs between populations.
Gene flow
400
Which condition is essential for natural selection to result in a new species? (2 words)
Ge________ Va_________
genetic variation or inherited variation
400
Without delayed implantation, the fawns would be born in the __________ when food is scarce and the weather is harsh.
Summer, Fall, Spring, Winter
winter
400
The difference in the number of spot is an example of which aspect of natural selection?
In__________ Va_________
Inherited variation or genetic variation
400
The most likely consequence of having a low genetic diversity on the cheetah population is that the cheetah population becomes less likely to su________ an outbreak of a disease or an environmental change, increasing the chance of species ex________.
survive, extinction
500
For white-tailed deer giving birth only in the spring and summer ensures that offspring are born when f______ is most available.
food
500
The process of n________ s_________ in populations of organisms is most likely responsible for the adaptations exhibited by these different feet.
natural selection
500
Adaptation allows marine gastropods to be successful without a shell because they are not attacked by most pr___________ and are able to re____________ successfully.
predators, reproduce
500
Random change in allelic (genetic) frequencies in a population is called
ge______ dr______
Genetic drift