Explain these observations taking into consideration

Assignment Help Biology

Reference no: EM13156233

The three homeodomain proteins ABD-B, ABD-A, and UBX are encoded by genes within the BX-C of Drosophila. In wild-type embryos, the Abd-B gene is expressed in the posterior abdominal segments, abd-A in the middle abdominal segments, and Ubx in the anterior abdominal and posterior thoracic segments. When the Abd-B gene is deleted, abd-A is expressed in both the middle and the posterior abdominal segments. When abd-A is deleted, Ubx is expressed in the posterior thorax and in the anterior and middle abdominal segments. When Ubx is deleted, the patterns of abd-A and Abd-B expression are unchanged from wild-type. When both abd-A and Abd-B are deleted, Ubx is expressed in all segments from the posterior thorax to the posterior end of the embryo. Explain these observations, taking into consideration the fact that the gap genes control the initial expression patterns of the homeotic genes.

Reference no: EM13156233

Questions Cloud

Improved organizational communication : Mediated communication and social media (e.g., email, blogs, Facebook, Skype, and Twitter) have played a major role in changing the way that organizations engage in communication with their customers and with employees internally. As we have learn..

Differences between the spines of warm-water and cold-water : Spiny species of diatoms are found in both warm subtropical waters and colder areas. Because warm water is less dense than cold water, would you predict any differences between the spines of warm-water and cold-water individuals? Why?

Difference in mean number of months before raise granted : At the .05 level of significance, is there a difference in the mean number of months before a raise was granted among the four CPA firms?

Explain few drops of phenolphthalein indicator : In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point

Explain these observations taking into consideration : The three homeodomain proteins ABD-B, ABD-A, and UBX are encoded by genes within the BX-C of Drosophila.

Science blogs website and read the blog : Go to the Science Blogs Website and read the blog post titled "Dichloroacetate and cancer". Explain how the blog post ties in with this week's lessons. Indicate three (3) significant ways this post tells us about the link between metabolism, apoptosi..

What volume will the gas occupy : a sample of oxygen gax occupies a volume of 250ml at 740 torr presure, what volume will it occupy at 800 torr pressure?

Chemiluminescence reaction will actually occur very slowly : Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air? If you had a stoppered flask with basic luminol and then opened it to th..

Gram positive alkalinophile that grows at a ph = 10 : You isolate a Gram positive alkalinophile that grows at a pH = 10. At this external pH, the intracellular pH is maintained at 7.3. Using the equation proton motive force (pmf), determine the contributions of the electrical and chemical energy compone..

User Account

All Pages