Which of the Following Statements Is TRUE Regarding Drosophila Development

question 22

Multiple Choice

Which of the following statements is TRUE regarding Drosophila development?

• A)Polarization of Drosophila embryos is the result of the expression of maternal-effect genes, such as bicoid.
• B)Both hunchback and caudal proteins demonstrate a similar expression pattern as their corresponding mRNAs.
• C)Bicoid protein could be considered a "posteriorizing" factor, whereas Nanos protein is an "anteriorizing" factor.
• D)Bicoid and Nanos proteins inhibit the expression of hunchback and caudal, respectively.
• E)All of these choices are correct.

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Definitions:

Amu

Atomic Mass Unit, a standard unit of mass that quantifies mass on an atomic or molecular scale.

Valence Electrons

Electrons in the outermost shell of an atom that are available for bonding with other atoms.

Atomic Number

The number of protons in the atomic nucleus of an atom, which uniquely identifies the element to which the atom corresponds.

Chemical Behavior

Describes the reactions and interactions of substances based on their chemical properties and the conditions under which they occur.