Some genes that are expressed in the fetal stage are never expressed again in that individual's life. What do you think is the most common mechanism for preventing the expression of such genes?

What will be an ideal response?


Such genes are permanently silenced, typically via heterochromatic packaging. This is more efficient than relying on repression.

Biology & Microbiology

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Antiviral drugs may target

A. uncoating. B. nucleic acid synthesis. C. viral assembly. D. viral ribosomes. E. uncoating, nucleic acid synthesis, AND viral assembly.

Biology & Microbiology

In ____, the gray crescent establishes the ____ axis of the body

a. birds; dorsal-ventral b. frogs; dorsal-ventral c. humans; dorsal-ventral d. birds; anterior-posterior e. sea urchin; anterior-posterior

Biology & Microbiology

Heliobactor pylori and Ulcers

What will be an ideal response?

Biology & Microbiology

Flat bones

What will be an ideal response?

Biology & Microbiology