eron ns are only produced certain molecules are und in the cell. eron = are only read when molecules are ht = are only read when molecules are ng. ns are only produced certain molecules are ht Negative regulation O OC O O Positive regulation O O O

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Identify each of the following as either a negative or a positive genetic control mechanism.

trp operon
Proteins are only produced
when certain molecules are
not found in the cell.
lac operon
Genes are only read when
certain molecules are
present
Genes are only read when
certain molecules are
missing.
Proteins are only produced
when certain molecules are
present
Negative regulation
O
O
O
Positive regulation
O
O
O
Transcribed Image Text:trp operon Proteins are only produced when certain molecules are not found in the cell. lac operon Genes are only read when certain molecules are present Genes are only read when certain molecules are missing. Proteins are only produced when certain molecules are present Negative regulation O O O Positive regulation O O O
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