Which of the following isnot true of the fruit fly Hedgehog (Hh) protein?
A. Hh is a member of the Wnt signaling pathway.
B. Hh expression is activated by the transcription factor engrailed (en).
C. Hh is secreted and interacts with Wg-producing cell receptors.
D. Hh functions as a signaling molecule at segment boundaries.
A
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The sickle cell allele is spread through the population in West Africa and maintained at a high
frequency due to ____________________ advantage. Fill in the blank(s) with the appropriate word(s).
Tidal volume + inspiratory reserve volume is called
A) tidal volume. B) functional residual capacity. C) inspiratory reserve volume. D) vital capacity. E) inspiratory capacity.
The most abundance compound in most living things is
a) carbon dioxide b) water c) sodium chloride d) sugar
Lake turnover
What will be an ideal response?