Homeotic Genes Contain a Homeobox Sequence That Is Highly Conserved

question 4

Multiple Choice

Homeotic genes contain a homeobox sequence that is highly conserved among very diverse species. The homeobox is the code for that domain of a protein that binds to DNA to regulate development of the embryo. The selective expression of homeotic genes, over time and space, is central to pattern formation during development. Based on this information, which of the following statements would you expect to be correct?

• A) Homeotic genes are selectively expressed over space and time during development.
• B) A homeobox-containing gene has to be a developmental regulator.
• C) Homeoboxes cannot be expressed in nonhomeotic genes.
• D) All organisms must have homeotic genes.

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Definitions:

Finish Defects

Imperfections or flaws that appear on the surface of products during or after the manufacturing process, affecting the product's aesthetics or functionality.

Lower Control Limit

A statistic used in process control charts to signify the lower threshold below which a process is considered to be out of control.

Defect Rate

The proportion of manufactured items that do not meet the prescribed quality standards.

Control Chart Limits

the pre-determined upper and lower boundaries on a control chart within which a process is considered to be in control and performing as expected.