Unit 1 Evolution

Slight differences between members of a species are called

• predators

• selections

• variations

• traits

If two organisms look very similar during the earliest stages of development, this is evidence that the organisms

• are not related

• evolved from different ancestors

• Have exactly the same DNA

• evolved from common ancestors

Which term refers to the process by which individuals that are better adapted to their environment are more likely to survive and reproduce?

• natural selection

• overproduction

• competition

• variation

An inherited trait that helps those organisms that have it to survive

• niche
• structure
• characteristic
• adaptation

Natural selection is known as

• family descent

• survival of the fittest

• convergent evolution

• divergent evolution

In order for an adaptation to have an impact on the species as a whole, it must be:

• Dominant

• Recessive

• Heritable

• Negative

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

Finches on the Galapagos Islands had different beaks in order to help them do what?

• Build nests
• Fight off predators
• Collect food sources
• Compete with rivals

Which scientist visited the Galapagos Islands and came up with the theory of natural selection?

• Theodor Schwann

• Gregor Mendel

• Charles Darwin

• Rudolf Virchow

What type of evidence is shown in the image above?

• Fossils

• Vestigial structures

• Homologous Structures

• DNA