The Following Questions Refer to the Information Below -Which of These Items Does Not Necessarily Exist in a Compared

question 45

Multiple Choice

The following questions refer to the information below.
A researcher compared the nucleotide sequences of a homologous gene from five different species of mammals with the homologous human gene. The sequence homology between each species' version of the gene and the human gene is presented as a percentage of similarity.
$$\begin{array} { l c } \text { Species } & \text { Percentage } \\\hline \text { Chimpanzee } & 99.7 \\\text { Orangutan } & 98.6 \\\text { Baboon } & 97.2 \\\text { Rhesus Monkey } & 96.9 \\\text { Rabbit } & 93.7\end{array}$$

-Which of these items does not necessarily exist in a simple linear relationship with the number of gene-duplication events when placed as the label on the vertical axis of the graph below?

• A)number of genes
• B)number of DNA base pairs
• C)genome size
• D)mass (in picograms)of DNA
• E)phenotypic complexity

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Definitions:

Trapezius

A large, triangular muscle extending over the back of the neck and shoulders that moves the head and shoulder blade.

Distinct Muscles

Specific, individual muscles that are easily identifiable and separate from others in the body's muscular system.

Dorsal

Pertaining to the back side of the body in humans, or the upper side in quadrupeds and other animals.

Ventral

Pertaining to the front or anterior of the body; opposite of dorsal, which refers to the back or posterior.