The genes of blue opsin are present on:
Correct answer: B. Autosome 7.
- A. Autosome 9.
- B. Autosome 7.
- C. Autosome 1.
- D. Autosome 3.
Explanation
b) Autosome 7: This is the correct option. The genes for blue opsin (a type of photoreceptor in the eye) are located on chromosome 7, which is one of the autosomes in the human genome.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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