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What your fraternal twins look like this week
Posted By:jasmin On 6/29/2008

What your fraternal twins look like this week

 

First Trimester

Nonidentical twins like these (also known as dizygotic twins) are the most common. Each baby grows from a separate fertilized egg (zygote). By 3 weeks each zygote has developed into a ball of several hundred cells, called a blastocyst, and is burrowing into the uterine lining.

 

 

3 Weeks

Twins at 4 Weeks   

 

 

 

 

4 Weeks

Twins at 8 Weeks   

EmbryoPrimitive PlacentaAmniotic SacYolk Sac

 

 

 

8 Weeks

Twins at 12 Weeks   

 
 

12 Weeks

Twins at 16 Weeks   
 
 
 
 
 
 

Second Trimester

Your babies have their own unique fingerprints. They can grimace and squint and have started peeing out the amniotic fluid they've been swallowing. You can see their sex organs during an ultrasound.

 

 

 

 

16 Weeks

Twins at 20 Weeks   

HeadToesBlood Vessels

 

 

 

 

 EarEyelidUmbilical CordUterus 

 

 

 

 

 

20 Weeks

Twins at 24 Weeks   
 

24 Weeks

Twins at 28 Weeks   
Taste BudsLungsSkinUterus
SkinBowelUterus

Third Trimester

Your babies can open their eyelids, which now sport eyelashes. Fat layers are building up under their skin, smoothing it out. They can suck their fingers and you may feel them hiccupping.

28 Weeks

Twins at 32 Weeks   

EyeFatUterus

 

 

 

 

 

 HeadToesBlood Vessels

32 Weeks

Twins at 36 Weeks   

ToenailsHairUterus

 

 

36 Weeks

 

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