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In Drosophila, the anterior determinant Bicoid is known to activate expression of the gene hunchback in the anterior half of the embryo. (Bicoid is a transcription factor, which binds to the promoter of the hunchback gene and stimulates transcription.) The gene chapeau is also activated by Bicoid, but requires higher levels of Bicoid to activate its expression than the hunchback gene requires. Where would you predict chapeau mRNA would be observed in a wild-type embryo?
a) Throughout the embryo
b) In the anterior half of the embryo
c) In the anterior quarter of the embryo
d) In the anterior ¾ of the embryo
e) In the posterior half of the embryo
f) In the posterior quarter of the embryo
Features of Amphibian Gastrulation Major features of amphibian gastrulation are: Ectoderm surrounds the embryo by Epiboly. Gastrulation is initiated by a limited i
Define Under nourished persons - nutritional intervention using MNA? An MNA score below 17 indicates that the patient is suffering from under nutrition. Thus in this situatio
Packs, pouches, and cassettes are sometimes wet after completing the sterilization process. This is a problem usually associated with the use of paper or paper/ plastic wraps in t
I nfectious coryza A highly infectious bacterial disease of chickens caused by Hemop hilus paragallinarum, is characterized by catarrhal inflammation of the upper respirator
What does an anther have on it? The anther is the part of the flower that keeps the pollen. This and the filament both make up the stamen.
Dietary fibre Dietary fibre: Typhoid patient has an inflamed intestinal mucosa, which can be easily perforated and ulcerated leading to internal haemorrhage. Thus foods hig
Ratios of the bases in different samples of nucleic acid yielded the following results: a. A + C = 0.6 b. A + C = 1 c. A + G = 1.2
Asexual
How can the immune memory lead to the efficacy of vaccines and also produce allergies? Vaccines are controlled inoculations of fragments of infectious agents or of inactive inf
Homologous Recombination is the exchange of the sequence between two associated but different DNA (or RNA) molecules, with the result that a new "chimeric" molecule is obtained. S
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