Which of the following statements about human brain development is correct?
a. Cells which will go on to produce those that form the foetal brain are not identifiable until week 3 after fertilisation of the egg
b. Differential gene expression is only observed once cells begin to undergo differentiation into mature neurons
c. Glial cells are not produced until mature neurons have been produced
d. The cellular and molecular processes that underpin early human brain development are unique to humans
CORRECT = a
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