The Abdominal Segments of Drosophila Have No Appendages

question 4

Multiple Choice

The abdominal segments of Drosophila have no appendages. Loss of function of bithorax genes results in appendages forming in these abdominal segments. Therefore, __________.

• A)bithorax mutations are necessarily recessive
• B)bithorax genes normally activate appendage-forming genes
• C)ultrabithorax usually acts to oppose bithorax genes
• D)bithorax normally activates a gene that negatively regulates appendages in the abdomen
• E)expression of bithorax wild-type genes suppresses all appendage formation

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The action of providing or distributing something officially, such as a document.

Formal Research

Systematic investigation aimed at discovering and interpreting knowledge through a structured approach, such as experiments or surveys.

Scientific Experiment

A systematic investigation conducted to discover, interpret, or revise facts, behaviors, or theories using scientific methods.

Power Distance

A cultural dimension that reflects the extent to which less powerful members of organizations and institutions accept and expect that power is distributed unequally.