The following table lists some of the genes that regulate fruit fly development.

Question

The following table lists some of the genes that regulate fruit fly development. The effect of each gene on development is listed in the second column of the table. Suppose samples of purified gene product are injected in specific regions of fruit fly embryos. The embryos will continue to develop; however, the adults will exhibit a phenotype determined by the effect of the injected protein. Hypothetical adult fly phenotypes are shown below. Function of gene product High nuclear concentrations result in the formation of ventral structures. Gene dorsal cactus toll nanos Low nuclear concentrations result in the formation of dorsal structures Binds to dorsal gene product so that it cannot enter the nucleus. Results in the degradation of the cactus gene product. High concentrations result in the formation of posterior structures. bicoid High concentrations result in the formation of anterior structures. ultrabithorax Represses distal-less distal-less Activates limb formation. Consider what effect the following injections of gene product will have on the developing fruit fly. The anterior portion of the fruit fly refers to the head, the posterior to the abdomen, dorsal to the top, and the ventral to the underside. Match the fruit fly with the description of the injected gene product. A normal fruit fly is shown for comparison Continued below.

Explanation / Answer

The second one represents the dorsal larvae gene which is the fruit fly.

The third one is representing the distal less gene fruit fly.

The fourth one is bicoid gene fruit fly

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.