Blastocyst

In mammalian development,<br/>which of the following is in the correct chronological order of event:_____ A: blastocyst, zygote, 4-cell,<br/>compacted morula B: zygote, 4-cell, compacted<br/>morula, blastocyst C: compacted morula,<br/>blastocyst, zygote, 4-cell D: 4-cell, compacted morula,<br/>blastocyst, zygote

blastocyst formed at: A: 1-2 days B: 2-3 days C: 3-5 days D: 5-7days E: 7-9days

Embryonic stem cells (ES cells) are pluripotent stem cells derived from the outer cell mass of a blastocyst, an early-stage pre-implantation embryo._

Which of the followings can develope into the embryo?() A: The inner cell mass B: The zona pellucida C: The trophoblast D: The blastocyst cavity E: The morula

Which are essential condition of Implantation? A: The disappear of zona pellucida B: Syncytiotrophoblast is derived from the cytotrophoblast C: The synchronized development of blastocyst and endometrium and function in coordination. D: The pregnant women can produce enough progesterone E: The pregnant women can produce enough estrogen