AP BIOLOGY

Detailed explanation-1: -A zygote is the first diploid cell that is formed by the fusion of male and female gametes resulting in the formation of an embryo.

Detailed explanation-2: -Final answer: The single cell produced after fertilization is called zygote.

Detailed explanation-3: -Fertilization is the fusion of the male and female sex gametes so as to produce an embryo/zygote. This 2-celled embryo is called the zygote. This zygote further undergoes cleavage and the number of daughter cells multiplies finally forming a blastocyst, which after implantation continues to grow in the uterus.

Detailed explanation-4: -During fertilization, the sperm and egg unite in one of the fallopian tubes to form a zygote. Then the zygote travels down the fallopian tube, where it becomes a morula. Once it reaches the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the uterine lining-a process called implantation.