Refer to the following events (A-F) during the embryonic development stages:
A
Separation of eyelids 
B
Movement of foetus
C
Development of limbs 
D
Appearance of genitals
(E) Heart beat (F) Formation of Notochord. Arrange the events above in chronological order in phases of development of human zygote to an infant.
(E) Heart beat (F) Formation of Notochord. Arrange the events above in chronological order in phases of development of human zygote to an infant.
Text Solution
Verified by ExpertsThe correct answer is:
C
• Formation of notochord 
week.
• Heart starts beating 
week.
• Fetus develops limbs - By the end of 
week ( 
month)
• External genitals appear - by 
week.
• Fetal movements become obvious 
weeks.
• Eyelids separate - ~ 24 weeks.
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