1) By 3 to 4 days after fertilization, the dividing cells of the embryo assume a spherical shape and the embryo is called a morula.
Ngemuva kwa-3 kuya ku-4 wemalanga kwakheke imbewu yemuntfu, tinhlayiya letichekeka emkhatsini te-embriyo tiba yindzingilita bese kutsi i-embriyo ibitwa ngekutsi yimorula.