Mutations of Regulatory Elements of Developmental Genes May Have Either

question 6

Multiple Choice

Mutations of regulatory elements of developmental genes may have either dominant or recessive effects. If a mutation results in a silencer element that negatively regulates, which do you expect?

• A)a recessive effect in which cis elements are up-regulated
• B)a recessive effect in which cis elements are down-regulated
• C)a dominant effect in which the silencer down-regulates gene activity
• D)a dominant effect in which gene activity is up-regulated
• E)a dominant effect in which the silencer is trans-activating

---

Definitions:

Percent Frequency Distribution

A tabular summary of data showing the percentage of observations in each of several nonoverlapping classes.

Bar Chart

A graphical device for depicting categorical data that have been summarized in a frequency, relative frequency, or percent frequency distribution.

Pie Chart

A graphical device for presenting data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class.

Sick Leave

Authorized absence from work due to illness.