Your Babies: Week 5

fetal development

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There may be 1 or 2 placentas and sacs; 2 sacs and 2 placentas are most common.

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The umbilical cords form, connecting babies to your blood supply.

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Chromosomes already determine your babies' hair and eye color and gender.

WebMD Medical Reference Reviewed by Traci C. Johnson, MD on June 25, 2018
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