Ralph Catalano
Ralph Catalano
female fragile likely male
Because male fetuses are more fragile than female fetuses, they are more likely to be damaged.
age assumption based compete interest less likely male males offspring small strong survive theory weak
The culled-cohort theory is based on the assumption that it is not in the mother's interest to have small or weak male offspring during times of stress. Weak males are less likely to survive to age of reproduction. Even if they do survive, they must then compete with strong males for females.
results studies
This has to be replicated elsewhere. We'll see what the results of those studies are.
interest son survive weak
It's not in her evolutionary interest to have a weak son in times of stress. He may not survive or may not be competitive for females.
biological clearly compared men
Statistically, it is clearly true; compared to men, (women) are biological fortresses.
boys survived weak
The weak boys got culled out and those boys that survived are hardier on average. They live longer.
argument belief buses care effect found help lift maximize mechanism natural nature pounds selection stress wants
One argument is that it was conserved to help us lift buses off of pedestrians who just got hit. My belief is that nature conserved the stress mechanism because of its effect on gestation. Natural selection doesn't care about individuals, it just wants poundage and conservation of genes. It found a way to maximize the pounds and the genes.
argument compete females males prefer robust
The argument is that in most species, males will compete with each other for females, and females prefer robust males.
average lives rid
You get rid of the weak, and on average the cohort lives longer.
based directly humans natural test
We can never use humans to directly test out the theories. We can only make inferences based on natural observation.