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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
Explain Demography, Demographic Transition and Demographic Cycle We know that population of different countries in the world is always changing. For some countries like India a
Please consider the phenomenon of bacterial resistance to antibiotics. How did the combination of human advances and basic evolutionary principles lead to this situation? How is it
A classical secretory protein vary from a cytosolic protein by having a sequence about 13-35 amino acids long at its N-terminal end called as a signal peptide or signal sequence.
what are the biological significance of the skeleton?
This problem refers to the MN and ABO loci mentioned in class. It also refers to the Rh locus, which is responsible for the positive/negative part of the blood type. The Rh+ allele
A classic study of extrasensory perception tests the ability of one person to read another's mind. The test uses five cards with different designs, all known to both participants.
Some animals, such as cows, normally make only one offspring from each mating. If a cow showed a dominant phenotype, why would a typical testcross be a complex way to verify the ge
a_molecule can be dissolved in water solution but a _molecule does not mix with water
Q. What is ST Elevation in Leads without Q-Wave? ST elevation in leads without Q-waves can occur in few very different situations, both of which are fairly uncommon. The first
A biologist examines a series of cells and counts 140 cells in interphase, 10 cells in metaphase, 4 cells in anaphase and 7 cells in telophase. if complete cell cycle requires 24 h
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