"Horses are not like fruit flies that hatch and reach reproductive maturity in only 10 days – there are multiple years involved in the generation time. And so, when you think about the distribution of several deleterious genetic changes through most of the thoroughbred population, it would take much longer than the 30 to 50 years that people are saying there’s been this profound drop in racehorse durability. As such, you cannot explain the drop in the number of starts strictly on a genetic model – the math just doesn’t work out.”
>>VVV>> AMEN! Beautifully put.