Examlex
During the replication of DNA,DNA polymerase has to synthesize the daughter strand in the 5' to 3' direction because DNA polymerase can only join nucleotides to the 3' end of the growing new strand.
Embryonic Stage
A critical period in prenatal development covering the first 8 weeks after fertilization, when the basic structures of the organism begin to form.
Post-Natal Stage
The period following childbirth, focusing on the mother's recovery and the baby's adaptation to life outside the womb.
Embryonic
Referring to an early developmental stage in animals and plants; in humans, it covers the first eight weeks after fertilization.
Foetal
Pertaining to a fetus, the developmental stage of a vertebrate occurring in the womb before birth.
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