An Organism Has a Relatively Large Number of Hox Genes

question 14

Multiple Choice

An organism has a relatively large number of Hox genes in its genome.Which of the following is true of this organism?

• A)These genes are fundamental and are expressed in all cells of the organism.
• B)The organism must have multiple paired appendages along the length of its body.
• C)The organism has the genetic potential to have a relatively complex anatomy.
• D)Most of its Hox genes owe their existence to gene fusion events.

---

Definitions:

Pi Bonds

Covalent chemical bonds where two lobes of one involved atomic orbital overlap two lobes of the other involved atomic orbital, forming a bond that is parallel to the bonding axis and allowing for electron sharing.

RU-486

A synthetic steroid used medically to induce abortion by blocking the action of progesterone.

Cis-trans Isomers

Stereoisomers that differ in the spatial arrangement of groups relative to a double bond, ring, or other structure leading to different physical and chemical properties.

Constitutional Isomers

Molecules that share the same molecular formula but differ in the connectivity of their atoms, leading to different structural forms.