During Embryonic and Fetal Development,changes in Isoenzyme Distribution Patterns Are

question 14

Multiple Choice

During embryonic and fetal development,changes in isoenzyme distribution patterns are common.These changes are thought to result from:

• A) mutation-driven gene expression that reoccurs in adult malignancies.
• B) altered production due to a genetic defect.
• C) increased production and secretion from all undifferentiated proliferating cells.
• D) differential expression and changes in the relative activities of gene loci within developing cells.

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Definitions:

Atomic Number

The number of protons in an atom.

Atomic Mass

The number of neutrons and protons in an atom.

Polar Nature

Refers to the characteristic of molecules having electrical or magnetic polarity, with distinct positive and negative ends.

Halite

Also known as rock salt, it is a mineral composed primarily of sodium chloride and forms through the evaporation of saline waters.