BSCS Biology: A Molecular Approach

Chapter 16: Population Genetics

Genetic Variation in Populations

1.
What is the difference between microevolution and macroevolution?
A)Microevolution involves smaller organisms than macroevolution.
B)Microevolution occurs on a shorter time scale than macroevolution.
C)Microevolution takes place at the molecular level; macroevolution involves species.
D)Microevolution requires the use of specialized equipment to observe; macroevolution does not.
2.
When two or more alleles of a gene for a trait are present in a gene pool, the population is said to be ____ for that trait.
A)polymorphic
B)polynomial
C)multigenerational
D)saturated
3.
In the miniature gene pool shown here, what percentage of the alleles are for the dominant purple color?
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A)75%
B)50%
C)25%
D)100%
4.
About what percentage of human DNA bases are variable?
A)10%
B)99.90%
C)0.10%
D)1%
5.
The Hardy-Weinberg model predicts what?
A)the size of very large populations
B)the rate of change of new biological discoveries over time
C)the frequency of genetic mutations
D)the frequency of genotypes, based on allele frequencies
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