Researchers at the University of British Columbia Are Working on a Way

question 37

Multiple Choice

Researchers at the University of British Columbia are working on a way to analyze gene expression within a single cell as it differentiates. This is significant because

• A)cDNA libraries could be made.
• B)tissue identification would be easier.
• C)RNA is needed to understand expression and probing a cell as it undergoes differentiation is impossible at this point.
• D)DNA within a single cell is difficult to extract.
• E)generation of totipotent adult stem cells would be possible.

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Definitions:

Polyphenic Traits

Traits that exhibit several phenotypic expressions depending on environmental or genetic factors.

Phenotypic Plasticity

The skill of an organism to adjust its phenotype in accordance with changes in its surroundings.

Genetic Polymorphism

The existence of two or more distinct alleles at a given locus in a population’s genome.

Spans of Control

The number of subordinates or tasks that one manager or leader can effectively oversee or manage.