Which statement is accurate about variations?(1 point)
In all cases, variations become more common in a population
Organisms with variations are less likely to pass these variations to their offspring
In all cases, variations affect how likely it is that an organism reporduces
Organisms with variations that give an advantage are more likely to survive
Organisms with variations that give an advantage are more likely to survive
Consider the following scenario: In a muddy lake environment, some fish have brown scales. Most
fish, however, have silver scales. Predators have a harder time seeing fish with brown scales. Which
term best describes the brown scales?(1 point)
New mutation
Advantageous trait
Inactivated gene
Predominant phenotype
Advantageous trait
How did the Industrial revolution impact the population of peppered moths in Britain?(1 point)
The light-colored moths became more common
The dark-colored moths became more common
The Industrial Revolution caused the proportions of each color morph in the populations to become unequal
The Industrial Revolution caused the proportions of each color morph in the populations to become equal
The dark-colored moths became more common
There are two varieties in a population of squirrels: short tails and long tails. Long-tailed squirrels are
better at jumping and balancing in trees. Scientists observe that over the span of 100 years, the
proportion of the population with long tails increases from 10% to 60%. Which statement is most
likely?(1 point)
The proportion of short-tailed squirrels may have decreased due to an increase in trees
The proportion of long-tailed squirrels may have increased due to increased food availbility
The proportion of long-tailed squirrels may have increased due to decrease in trees
The proportion of short-tailed squirrels may have decreased due to decreased food availabiity
The proportion of short-tailed squirrels may have decreased due to an increase in trees
Why is the cheetah gene pool small today?(1 point)
Poor adapability
Lack of advantageous traits
Inbreding in zoos
Multiple bottleneck events
Multiple bottleneck events
After a bottleneck event, the population of rabbits in an area has significantly decrease. A decade later,
the population of the rabbits recovers to its original numbers. Which statement is correct about he
rabbits?(1 point)
They are as likely to survive environmental changes because they survived the bottleneck event
They are as likely to urvive environmental changes because their population has recovered
They are less liekely to survive environmental changes because of the bottleneck event
They are more likely to survive environmental changes because of the bottleneck event