Chapter 19 Evolution - Descent with Modification Practice

Which of the following is a true statement about natural selection?

• it is goal directed
• individuals evolve
• variation exists in a population
• acquired characteristics

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NGSS.MS-LS4-4

Using the cladogram:  a common ancestor of amphibians and ray-finned fish would have

• a bony skeleton
• four limbs
• scaly skin
• eggs with shells

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NGSS.MS-LS4-2

The wing of a bat and a humans' arm have different functions and appear very different.  Yet, the underlying anatomy is basically the same.  therefore, these structures are examples of

• geographic isolation
• analogous structures
• homology
• reproductive isolation

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NGSS.MS-LS4-2

Sharks and dolphins are examples of which of the following?

• adaptive radiation

• divergent evolution

• founder effect

• convergent evolution

Variations in a population are maintained by

• mutations

• genetic recombination

• gene flow

• all of the above

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NGSS.MS-LS4-4

Which of the following is not involved in natural selection?

• competition for resources

• differences in reproductive success

• inheritable variation in populations

• selected traits by a breeder

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NGSS.MS-LS2-1

a bird that can easily outcompete other birds for food and that can produce many eggs has a high

• sexuality
• mutation rate
• fitness
• adaptability

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NGSS.MS-LS2-1

NGSS.MS-LS4-4

What is suggested by the similarity of early embryos of different species of vertebrates?

• no evolutionary relationships between the groups
• recent common ancestry
• similar environments in the past
• evolution from a distant common ancestor

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative
• early ancestor
• unrelated organism
• embryological stage

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NGSS.MS-LS4-2

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

• Hardy-Weinberg equilibrium within a population

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NGSS.MS-LS4-4