rs1805007
MC1Rrs1805007 is a single-nucleotide polymorphism (SNP) in the MC1R gene. Genespiral reads it in the Appearance and Aging & Longevity analyses to describe Red Hair and UV Sensitivity.
- Gene
- MC1R
- Alleles
- C / T
- Genotypes
- CC, CT, TT
- Traits
- 2 traits across 2 analyses
An rsID such as rs1805007 is the reference number dbSNP assigns to one position in the genome where people commonly differ by a single letter. Raw data exports from 23andMe and AncestryDNA list your two alleles at that position as a genotype - for this marker one of CC, CT, TT. The order of the two letters carries no meaning, so CT and its reverse are the same genotype.
Alleles on this page are written on the forward (plus) strand, matching how consumer raw files report them. Other references sometimes describe the same variant on the opposite strand, which swaps A↔T and C↔G - see why the same variant can look different. The associations below are educational summaries of published research; they are not diagnoses, and the effect of any single SNP is usually modest.
Red Hair
Appearance · Part of the Appearance analysis
The MC1R gene influences red pigmentation in hair.
| Genotype | Association |
|---|---|
| CC | Non-Red Hair |
| CT | Red Hair Traits |
| TC | Red Hair Traits |
| TT | Red Hair |
- Summary
- Variations can result in red hair or red highlights.
- Scientific insights
- Having at least one 'T' allele increases the chance of red hair traits; 'TT' often results in red hair.
- Lifestyle tips
- Red hair may be more sensitive to UV light; consider using hair products with UV protection.
UV Sensitivity
Dermatological Aging · Part of the Aging & Longevity analysis
Key regulator of melanin production.
| Genotype | Association |
|---|---|
| CC | Typical UV sensitivity |
| CT | Moderately increased sensitivity |
| TT | Higher UV sensitivity |
- Summary
- Well-studied variant affecting UV response.
- Scientific insights
- One of several MC1R variants affecting skin response.
- Lifestyle tips
- Sun protection important regardless of genetic profile.
Check your genotype at rs1805007
Load your raw DNA file and Genespiral looks up rs1805007 along with every other marker in the Appearance and Aging & Longevity analyses. The file is parsed in your browser and never uploaded, so your genotype stays on your device.
- 1. Download your raw data from 23andMe or AncestryDNA.
- 2. Open the analysis below and choose the file.
- 3. Find Red Hair and UV Sensitivity in your results.
Related
Other markers in MC1R
More markers from Appearance and Aging & Longevity
Articles that discuss rs1805007
References
Primary databases for this variant. Use them to check allele orientation, population frequencies, and the underlying studies.
- dbSNP entry for rs1805007 - NCBI
- rs1805007 variant page - Ensembl
- rs1805007 summary - SNPedia
- Clinical significance records for rs1805007 - ClinVar
- MC1R gene - NCBI Gene
Genespiral is an educational tool, not a medical service. Genetic associations describe tendencies observed across populations, not certainties for you. Read the full disclaimer.