The cell that directly results from the fusion of a secondary oocyte and a spermatozoon is called a(n)
A)ootid.
B)gastrula.
C)blastula.
D)morula.
E)zygote.

Question

Quizplus · Accepted Answer

The fusion of a secondary oocyte and a spermatozoon is known as fertilization, and the resulting cell is called a zygote. The zygote is the first cell of the new individual and contains all the genetic information necessary for development. A morula is an early-stage embryo consisting of a solid ball of cells, while a blastula is a later-stage embryo characterized by a fluid-filled cavity called a blastocoel. An ootid is a haploid cell that results from the completion of meiosis II in a secondary oocyte, but it rapidly undergoes transformation to become a functional ovum. A gastrula is a later-stage embryo that has undergone gastrulation, the process by which the blastula is transformed into a three-layered embryo.

The Cell That Directly Results from the Fusion of a Secondary