Which Sigma Factor, Encoded by the RpoH Gene, Is Active

question 43

Multiple Choice

Which sigma factor, encoded by the rpoH gene, is active at high temperatures?

• A)σ⁷⁰
• B)σ³²
• C)σ⁴⁵
• D)σ³⁷
• E)σ⁵⁰

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Definitions:

Miscarriages

The spontaneous loss of a pregnancy before the fetus is able to survive outside the womb, typically defined as before 20 weeks of gestation.

Natural Selection

A mechanism of evolution where organisms better adapted to their environment tend to survive and produce more offspring.

Chromosome Numbers

The total count of chromosomes present in the cell nucleus of an organism, distinct for each species, important for genetic stability and determining species' characteristics.

Genomic Imprinting

Genomic imprinting occurs when genes inherited from one or the other parent are silenced due to methylation. Imprinting can result in offspring who express either the maternal or paternal copy of the gene, but not both.