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Biology per 3

Development

What is gamete?male or female sex cell
What is the gamete for the male? Sperm
What is the gamete for the female? Egg
What is a fertilized egg called? Zygote and then an embryo.
Unicellular zygote divide the forming of two new cells
What is the process's called? cleavage
How many steps are there ? 2 cells - 4 cells - 8 cells and etc.
What is it called when a ball of cells called? Morula
What is a morula? The solid ball of cells formed by cleavage.
Morula hollows out what ? A hollow ball of cell
What is the hollow ball of cell called? Blastula
What is a blastula? Single lawyer of cells surrounded by fluid formed in the early weeks of an embryo.
What does one of the sides of the blastula do? Fold into two layers.
What is the gastrula? A structure made up of two trilaminar .
What are the two lawyers Ectoderm and Endoderm .
What is an Ectoderm and Endoderm? Ectoderm- Cells on the outer surface. Endoderm- Cells lining the surface.
The five steps of development? 1. Egg 2. Sperm 3. Zygote 4. Morula 5. Blastula
What is fertilization? Fusion of the female and male gamete.
Created by: kaylawill
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