A Protein-Coding Gene in a Eukaryote Has Four Exons and Three

question 187

Multiple Choice

A protein-coding gene in a eukaryote has four exons and three introns in the following arrangement. Assuming that transcription begins at exon 1 and ends after exon 4, how many different proteins could be made by alternative splicing of the pre-mRNA from this gene?

• A) Two
• B) Three
• C) Four
• D) Five
• E) Six

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Definitions:

Iodine

A chemical element with antiseptic properties and a key component in thyroid hormones, necessary for proper metabolic functions.

Adrenal Tumors

Abnormal growths that occur in the adrenal glands, which can be benign or malignant and may affect hormone production.

17-KS Test

A diagnostic test that measures the levels of 17-ketosteroids in the urine to assess adrenal gland function.

Adrenocortical Hormones

Hormones produced by the adrenal cortex that regulate various bodily functions, including metabolism and immune response.