Monozygotic Twins In A Rhesus Monkey

There are some challenges in order to produce monozygotic twins in a rhesus monkey. There are two major challenges which are the deficient pregnancy rates following embryo transfer and the inherent difficulties in supporting twin pregnancy in a rhesus monkey.
Rhesus monkey is not normally carried twins but in certain cases where the species naturally occurring twin pregnancies, the offspring rarely survive. The twins are usually born smaller and weaker than the single babies due to the undefined complication during the perinatal period. Besides, they put some difficulties on the mother for feeding them. In some cases, the mother will receive help from the other group members to carry the babies. Unfortunately, the case is not always the same