The Bar Graph Shows the Increasing Life Expectancy of Males

question 4

Multiple Choice

The bar graph shows the increasing life expectancy of males in the United States from 1930 to 2010. Use this graph. In which of the years shown was the life expectancy of males in the United States approximately the same?

• A) 2000 and 2010
• B) 2010 and 2020
• C) 1990 and 2000
• D) 1980 and 2030
• E) 2010 and 1990

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Definitions:

Complex Traits

Traits that are influenced by multiple genes and often by environmental factors as well, showing continuous variation within a population.

Heritability

The percentage of variability in a specific characteristic within a population that is due to genetic inheritance.

Phenotypic Variation

The differences in appearance and behavior among individuals of the same species, due to genetic and environmental influences.

Genetic Differences

Variation in the DNA sequence among individuals of the same species or between different species.