Briefly describe, in your own words, how the single cell formed
at fertilization differentiates
into different types of cells:
Ans: The process of altering the pattern of gene expression and thus becoming a cell of a particular type is called cell differentiation. The zygote is a tot potent cell - its daughter cells can become any cell type. During embryonic development, some cells migrate. While, once an egg is fertilized by a sperm, a zygote is formed. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation. Cells in these three layers will give rise to different parts of the organism. The endoderm eventually becomes the gut.
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