bio quiz for chapter 47 questions and answers

bio quiz for chapter 47 questions and answers - Samara...

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Samara Woolfolk Bio 120 sec 122 Dec, 6, 2010 Fertilization is the joint and fusion of 2 haploid cells into one diploid cell. The jelly coating of the egg attracts the sperm and the sperm swims toward the egg. The sperm cells have a special vesicle called an acrosome that will disperse jelly coat digesting enzymes on contact with the two cells. When the sperm wedges itself past the jelly coating there will be sperm-binding receptors ready to receive and take in that sperm. In the taking in of the sperm, the egg and sperm cells’ membranes fuse together. There is a swap of DNA and then embryonic development begins. Embryonic development is triggered by the fusion of the sperm and egg DNA, which makes a zygote. In embryonic development the first thing for the new zygote to do is to start dividing cells. The way for the single cell to start dividing is to start cleaving. This cleavage is the defining or beginning line between where the two new cells will be dividing. After a while of cells dividing and making many smaller cells called blastomeres, the blastocoel is formed
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bio quiz for chapter 47 questions and answers - Samara...

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