What is considered to be the first evidence of differentiation in the cells of an embryo?

a) the occurrence of mRNAs for the production of tissue-specific proteins
b) cell division occurring after fertilization
c) changes resulting from induction
d) determination of specific cells for certain functions
e) changes in the size and shape of the cell


Answer: a) the occurrence of mRNAs for the production of tissue-specific proteins

Biology & Microbiology

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