The Following Questions Refer to the Information Below -Species That Are Not Closely Related and That Do Not

question 40

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.
$$\begin{array} { l c } \text { Species } & \text { Percentage } \\\hline \text { Chimpanzee } & 99.7 \\\text { Orangutan } & 98.6 \\\text { Baboon } & 97.2 \\\text { Rhesus Monkey } & 96.9 \\\text { Rabbit } & 93.7\end{array}$$

-Species that are not closely related and that do not share many anatomical similarities can still be placed together on the same phylogenetic tree by comparing their

• A)plasmids.
• B)chloroplast genomes.
• C)mitochondrial genomes.
• D)homologous genes that are poorly conserved.
• E)homologous genes that are highly conserved.

---

Definitions:

Cerebrum

The largest part of the brain, responsible for voluntary actions, sensory perception, thought, reasoning, and memory.

Diencephalon

A division of the brain located between the cerebral hemispheres and brainstem, encompassing structures such as the thalamus and hypothalamus.

Midbrain

The middle portion of the brainstem that plays a role in vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.

Epithalamus

A portion of the diencephalon in the brain, involved in linking the limbic system to other parts of the brain and regulating hormones and circadian rhythms.