It is composed mostly of protein fibers, with protein receptors needed for sperm binding which, in turn, are bound to sperm plasma membrane receptors.fart species-specificity between these receptors contributes to prevention of breeding between different species.
It is composed mostly of protein fibers. This was with protein receptors. These protein receptors are needed for sperm binding. This sperm binding are bound to sperm plasma membrane receptors.fart species. This was in turn. Specificity between these receptors contributes to prevention of breeding between different species.