Which of the following is not a characteristic of Bicoid protein?
A. Bicoid is a maternal gene product.
B. Throughout the first seven nuclear divisions, Bicoid concentration is higher in the anterior pole than the posterior pole.
C. Bicoid represses Hunchback in the posterior pole.
D. Bicoid is a transcriptional activator of many segmentation genes.
C
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Manipulative experiments:
a. allow scientist to directly assess how changes in one component of a system influence the oth-er components. b. allow scientists to examine not only correlations among data, but also causality. c. ideally alter only one variable at a time. d. All of the above.
The figure illustrates a portion of the life cycle
of a(n) a. zygomycete. b. ascomycete. c. basidiomycete. d. glomeromycete. e. lichen
Genetic modifications have been used to increase plant leaf size for better photosynthesis
Indicate whether the statement is true or false
The hair cells of the inner ear begin to suffer damage when exposed to sounds louder than
a. 35?45 decibels. b. 45?55 decibels. c. 55?65 decibels. d. 65?75 decibels. e. 75?85 decibels.