What type of molecule do homeobox genes encode?

Study for the A2 Genetic Control of Proteins Test. Engage with flashcards and multiple choice questions, each question is accompanied by hints and explanations. Prepare thoroughly for your exam!

Multiple Choice

What type of molecule do homeobox genes encode?

Explanation:
Homeobox genes encode transcription factors. The proteins they produce contain a conserved homeobox domain about 60 amino acids long that binds DNA. By attaching to regulatory regions of target genes, these transcription factors control when and where genes are turned on or off during development, helping to shape body plans. That’s why the correct description is a DNA-binding protein that regulates gene expression. In contrast, membrane receptors are signaling proteins at the cell surface, metabolic enzymes catalyze chemical reactions, and non-coding RNAs are RNAs that are not translated into proteins.

Homeobox genes encode transcription factors. The proteins they produce contain a conserved homeobox domain about 60 amino acids long that binds DNA. By attaching to regulatory regions of target genes, these transcription factors control when and where genes are turned on or off during development, helping to shape body plans. That’s why the correct description is a DNA-binding protein that regulates gene expression. In contrast, membrane receptors are signaling proteins at the cell surface, metabolic enzymes catalyze chemical reactions, and non-coding RNAs are RNAs that are not translated into proteins.

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