The auburn curls.

Everyone believes their spouse to be exceptional; as a lover, perhaps, or a parent. Or a bore.

My husband was exceptional in many ways, right down to the exceptional nature of the genetic affliction which eventually saw Him crashing out of life in an exceptional manner one unexceptional Saturday in February.

Genetic science has not evolved enough yet to understand why Mark’s aortic dissection happened in the first place. They’re saving His remaining DNA for a point in the future when somebody in a lab coat and big glasses is able to work it out. (The geneticist did explain it all to me, but my brain reacted as it always does when confronted with science – implement the shut-off valve and begin thinking about wine.)

The fear now is whether my daughter may have inherited whatever rogue element was to blame for her daddy’s death.

Most of the time, I am able keep my fears in check. I watch her running full pelt down the road and manage to stop myself from following behind with a defibrillator, ‘just in case’.

Yesterday though I had a moment of tear-filled panic. I was brushing her hair and noticed a couple of depigmented strands in amongst the auburn curls. Three or four white hairs, like lengths of cotton. I admit that I am apt to overact, but hear me out on this.

Mark too suffered from hair depigmentation – it ran in a line, starting in the hair on His head, down through an eyebrow, the wiry hairs of one nostril, on through His beard and into His chest hair. Use your imagination for the rest.

After His aortic dissection, the geneticist suggested this depigmentation might be significant in why it happened. A tenuous connection to the Neural Crest Mosaic, which links the cells responsible for the development of pigmentation and the aorta in a growing foetus. Or something equally baffling to a simpleton like me. It sounded convincing at the time though.

So yesterday, I found myself plucking the offending strands from my daughter’s head, examining them in the sunlight, placing them against my black jeans, mentally preparing a frenzied email to Mark’s geneticist.

My daughter is exceptional – to me, at least – but I hope to Christ this is one area she remains run-of-the-mill.