A Gram-Negative,spiral-Shaped Organism Is Isolated from a Stool Sample That

question 5

Multiple Choice

A gram-negative,spiral-shaped organism is isolated from a stool sample that was hippurate-positive,catalase-positive,susceptible to nalidixic acid,and resistant to cephalothin.The organism can be identified as:

• A)Campylobacter coli.
• B)C.jejuni subsp.doylei.
• C)C.jejuni subsp.jejuni.
• D)C.fetus subsp.fetus.

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Definitions:

Codominance

A genetic scenario where two alleles of a gene are expressed equally in the phenotype of heterozygotes.

Epistasis

A genetic interaction where the effect of one gene is modified by one or several other genes, which can mask or alter its phenotype.

XIST

A gene involved in X chromosome inactivation, playing a crucial role in dosage compensation between males and females.

Long Noncoding RNA

A type of RNA longer than 200 nucleotides that does not code for protein but plays various roles in regulating gene expression at the transcriptional and post-transcriptional levels.