Every gene has a unique _____, or location, on a particular chromosome.Group of answer choiceslocusregulatory sequencechromatinpromoter
Question
Every gene has a unique _____, or location, on a particular chromosome.
- Group of answer choices
- locus
- regulatory sequence
- chromatin
- promoter
Solution
The correct answer to the question is "locus."
Explanation
In genetics, the term "locus" refers to the specific, fixed position of a gene on a chromosome. It serves as a way to identify where genes are located within the complex structure of chromosomes. Each gene's locus is unique, allowing researchers and scientists to pinpoint its exact location, which can be crucial for studying genetic variations and their implications in diseases and traits.
The other options presented:
- Regulatory sequence pertains to regions of DNA that control gene expression, but they do not define the physical location of the gene itself.
- Chromatin refers to the material that makes up chromosomes, consisting of DNA and proteins, which helps package the genetic material.
- Promoter is a specific region of DNA that initiates the transcription of a particular gene but doesn’t denote its location in the broader context of the chromosome.
Thus, the correct choice for the unique location of a gene on a chromosome is indeed "locus."
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