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Science
Biology
Chapter 20: Development, Heredity, and Aging
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I. Pre-natal development
A. Pre-natal period
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1. its the period from conception to birth
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Terms in this set (151)
I. Pre-natal development
A. Pre-natal period
1. its the period from conception to birth
2. pre-natal period is divided into how many parts and what are they
3
a. germinal
b. embryonic
c. fetal
a. germinal:
first 2 weeks of development
b. embryonic:
2nd- 8th week of development
c. fetal:
the last seven months of pregnancy
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