um no, only female gerbils can
Male gerbils can be neutered, but it is not recomended. Female gerbils should not be spayed. In general male gerbils should not be neutered unless there is a good reason for it.
yes
Yes. Male gerbils, no matter how old they are, can impregnate female gerbils. Most female gerbils can no longer conceive after 2 years of age. Either way, it's never wise to put a male and female together unless you intend to breed and provide for several litters. Gerbils are not easy to find homes for.
No I have two female gerbils (Minnie and KE$HA) and KE$HA is clearly older and they get along fine.
I'd be interested to know where you heard that as I've done necropsies on female gerbils and have not found that to be true.
...You are kidding, right? Gerbils are mammals; some of them are male, and some are, well, female. They reproduce the way mammals do.
About 28 days after the female gets pregnant.
Gerbils go into heat ever 4 day. There are no outward signs that they are in heat, unless a male is in the tank (in which the male will attempt to mate with her)
Gerbils do not have periods as they are oestral mammals and not menstrual ones like us. Some oestral mammals have a bloody discharge, but not gerbils. What you saw was most likely to be a smear of porphyrins from a gland near the gerbil's eye.
no male gerbils are very caring so dont split them up
Gerbils are mammals and breed sexually. The male approaches and mounts the female from the rear. The female remains positioned on all four legs, while the male balances on his back legs, resting his upper body on the female's pelvis.