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

---

Definitions:

Warfarin

A medication used as an anticoagulant to prevent blood clots by inhibiting the clotting factor production in the blood.

Incident Report

A formal documentation of any unusual or unexpected event that occurs in a professional setting, aiming to address and prevent future occurrences.

Clark's Rule

A mathematical formula used to calculate the proper dosage of medication for children based on their weight.

Nomogram

A graphical calculating device, a two-dimensional diagram designed to allow the approximate graphical computation of a function.