People with at Least One Copy of the HLA-B53 Gene

question 27

Multiple Choice

People with at least one copy of the HLA-B53 gene are better able to beat back malarial infections before the infection progresses.If this is a coevolutionary arms race between Plasmodium and humans,what would the next step in this race be?

• A)to see humans with more than one copy of the HLA-B53 gene
• B)to see humans without the HLA-B53 gene
• C)to see Plasmodium populations that counter the HLA-B53 gene
• D)to see Plasmodium populations that have the HLA-B53 gene

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Definitions:

Stacked Bar Chart

A graphical display of data where several bars are placed on top of one another to represent the total amount broken down into different parts.

Pie Chart

A circular statistical graphic which is divided into slices to illustrate numerical proportion.

Skewed To The Right

A description of a distribution that has a long tail on the right side, indicating that there are a number of observations that are significantly higher than the rest of the data.

Skewed To The Left

Describes a distribution of data where the tail is longer on the left side of the distribution graph, indicating that the bulk of the data points are to the right.