A Phosphorescent Red Strain of Bacteria Is Heat-Killed and Mixed

question 13

Multiple Choice

A phosphorescent red strain of bacteria is heat-killed and mixed with a living, colorless strain. Further observations of the mixture show that some of the living cells are now red. Which of the following observations would provide the best evidence that red color is a heritable trait?

• A) especially bright red color in some members of the living strain
• B) as the living cells divide the number of red cells increases
• C) when the heat-killed and living cells are mixed there is a decrease in the overall amount of red color
• D) after a few generations there are no more colorless cells, all cells are red

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Definitions:

Evolutionary Theory

A scientific explanation for the diversity of life, proposing that organisms change over generations through processes of natural selection and genetic variation.

Sexual Motivation

The psychological and physiological factors that guide and influence sexual behavior and desires.

Gender Disparity

Refers to the differences and inequalities in opportunities, status, and attitudes between genders.

Cultural Processes

The dynamic mechanisms through which cultures are maintained, transmitted, and transformed across time and space.