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I think so. My twins are three days apart according to every ultrasound so far. It seems perfectly reasonable that they could be up to a week apart especially considering that is about how long strong sperms keep on working within the right environment. I am not a Dr., but my guess would be it must be possible. Take care

While it is possible for non-identical (dizygotic/2-eggs) twins to be conceived apart (and by different fathers!), it's generally not the case. An ultrasound showing twins differing in age by 3 days is not significant given the margin of error for ultrasound technology. Just like most adults are different sizes, so too are babies in utero owing to genetic and environmental factors.

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โˆ™ 2015-07-15 18:34:26
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Q: Can dizygotic fraternal twins be conceived a week apart?
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Related Questions

What is another name for fraternal twins?

Another name for fraternal twins is dizygotic twins.


How do dizygotic twins occur?

Two separate eggs are fertilized. Dizygotic twins are the same as fraternal twins.


What are unidentical twins called?

How do fraternal twins form? Answer one egg from each ovary is fertilized.


Dizgotic twins is another name for monozygotic twins?

No, dizygotic twins are fraternal twins. Monozygotic twins are identical twins.


What is the biological name for twins who look alike?

Identical twins are called monozygotic. Fraternal twins are called dizygotic.


What is the frequency of monozygotic twins versus dizygotic twins?

The frequency of having monozygotic twins (identcal) is about 4 out of every 1000 births. Whereas dizygotic twins (fraternal) is about 12 out of every 1000.


What is the difference between dizygotic twins and monozygotic twins?

Dizygotic twins develop from two separate ova fertilized by different sperm at roughly the same time, they are also called fraternal twins. Monozygotic twins develop from one zygote that splits apart producing genetically identical zygotes; also called identical twins.


How may types of twins are there and which type may have different sex?

There are two types of twins -- monozygotic ("identical") from a single egg, and dizygotic (fraternal) from two eggs. Only dizygotic twins can have a different sex.


What is the difference between monozygotic and dizygotic twins?

Monozygotic twins are formed from the splitting of a single fertilized ovum, and are identical. Dizygotic twins are formed from two separate fertilized ova, and are genetically different. They are also called fraternal twins.


Is there a word for twins who don't look alike?

Nonidentical twins Dizygotic twins (commonly known as fraternal twins, but also referred to as non-identical twins or biovular twins)


Your friend is pregnant with twins they r in two different sacs and share a placenta and one is a boy and one is a girl?

They are dizygotic. Fraternal twins.


Twins who delevelop in separate amniotic sacs?

And what about monozygotic different gender twins (M/F)


What happens to a pregnant women for her to have twins?

Twins can be identical or fraternal (monozygotic or dizygotic). For identical twins, one sperm fertilizes an egg. The zygote divides into two identical embryos. For fraternal twins, two separate eggs are fertilized. They both implant on the uterine wall, forming two zygotes.


What is the scientific name for non-identical twins?

Non-identical twins are called fraternal or dizygotic because they develop from two separate eggs that are fertilized by two separate sperm.


How can you can get faternal twins?

Fraternal twins generally happen when two eggs are fertalized and then implant themselves in the wall of the uterus. They are also known as Dizygotic Twins, this is a link to some information on twins, hope you find this helpful http://en.wikipedia.org/wiki/Twins


How fraternal and identical twins are conceived?

Identical twins are when one egg in the fallopian tube is fertilized and then when it reaches the womb it splits into two eggs. Fraternal twins are made when two different eggs from each fallopian tube are fertilized at the same time.


Do fraternal twins always have different fathers?

Not usually no. Fraternal twins are conceived from separate eggs within the mothers womb. While identical twins start as one embryo and then split and grow into 2 babies. If a woman was sexually active with more than one man it is possible for fraternal twins to have different fathers, but it is extraordinarily rare.


What is the name of twins that don't look the same?

Dizygotic twins .


Two individuals are most likely to differ in personality if they are?

fraternal twins who were raised apart


Which is more common fraternal twins or identical twins?

Fraternal twins are more popular.


How Do Fraternal Twins Occur and Identical Twins Occur?

Fraternal twins (dizygotic twins) are simply two fertilized eggs that are implanted in the uterus at the same time. Identical twins (monozygotic twins) is one fertilized egg that separates into two embryos. In most cases, identical twins share one placenta, but have separate amniotic sacs. In some cases, they have two placentas. In rare cases, they share both the placenta and the amniotic sac.


What percentage of twins are fraternal?

There is no precise percentage of fraternal or identical twins but it is estimated that 2/3 of all twins are fraternal where as 1/3 of twins are identical.


What is another name for nonidentical twins?

dizygotic


What is the name for twins that aren't actually twins?

identical twins are single egg twins. fraternal twins a two egg twins. fraternal


What are fraternal twins and how are they formed?

In general, it is believed that having fraternal (dizygotic) twins can be genetic and that this predisposition can cause women to be more likely to release more than one egg at a time, offering the chance for more than one egg to be fertilized at a time. Other factors that can increase your chances of having fraternal twins include using fertility treatments and a mother being over 35-40 years old when she becomes pregnant.