TWI NS - University of Houston

TW I N S
The Origin of the Word Roommates
Background,Myths,andourExperience.
№
1
ntical
e
Id
Twins
The scientific term for identical twins is
“Monosygotic Twins”
This occurs when a single egg is fertilized to form one zygotewhich
then divides into two separate embryos.
How does this happen?
Regarding spontaneous or natural monozygotic twinning, a recent
theory posits that monozygotic twins are formed after a blastocyst essentially collapses, splitting the progenitor cells (those that contain the
body’s fundamental genetic material) in half, leaving the same genetic
material divided in two on opposite sides of the embryo. Eventually,
two separate fetuses develop.Spontaneous division of the zygote into
two embryos is not considered to be a hereditary trait, but rather a
spontaneous or random
event. Monozygotic twins
may also be created artificially by embryo splitting. It can
№ IVF to increase the number of
be used as an expansion of
2
available embryos for embryo
transfer.
F
ternal Twins
a
r
The scientific term for Fraternal twins is
“Dizygotic Twins”
This occur when two fertilized eggs are implanted in the uterus wall at the
same time. When two eggs are independently fertilized by two different
sperm cells, fraternal twins result. The two eggs, or ova, form two zygotes
How does this happen?
Unlike Identical twins, Fraternal twins are reffered to non-identical meaning the twins are disimiliar. Dizygotic twins, like any other
siblings, have an extremely small chance of having the same chromosome profile. Like any other siblings, dizygotic twins may look similar,
particularly given that they are the same age. However, dizygotic twins
may also look very different from each other. They may be of different
sexes or the same sex. The
same holds true for brothers
and sisters from the same
№ parents, meaning that fraternal and/or sororal twins are
simply siblings who happen
3
to be the same age.
M
y
out Twin
b
A
s
s
th
1.
They'reOneandtheSame:They'renot.:Theyareindividuals,regardlessofwhetherthey'reidentical
orfraternal.Peoplemayseethemasamonolithandaunifiedfront,butbelievethefactthatthey
eachwanttobeseenasindividuals--despitetheircloserelationship.Inspiteoftheirsimilarities,they
areunique,justlikesiblingsthatarebornatdifferenttimes.Accordingly,treatthemassuch.
2.
The“EvilTwin”andthe“GoodTwin”:There’snosuchthing.Kidswillbekidsandsometimesone
willbehavebetterthananother,likeanytwochildreninafamily.Settingupadichotomybetween
siblingscancausenothingbuttrouble.Whenchildrenarelabelledas“good”or“bad,”thesubsequentbehaviouroftenbecomesaself-fulfillingprophecy.
3.
AllTwinsMustHavetheSameParents:IknowyouaresittingtherethinkingIamcrazywiththis
onebutletmeexplain.Itisanecessityforthemothertobethesame,however,havingthesamefatherisnot.Letmefirstgiveyouthedefinitionoftwins.Identicaltwinsareformedwhenonesperm
fertilizesoneeggandthentheeggsplitswhilefraternaltwinsareformedwhentwoseparatesperms
fertilizetwoseparateeggs.Itisthefraternaltwinsthatcouldhavedifferentfathers.Knowingthis
definition,isitnotpossibleforawomentohavesexualrelationswithtwodifferentmenwithinthe
sameovulationcycleandbefertilizedbyboth?Ifyouansweredyes,youarecorrect.Iknowofone
suchcaseandthereareprobablymanyothersnotreported.Iamnotsayingthatthisisthesuggested
wayofhavingtwins,Iamjustsayingitcanhappen.
4.
Hail,Cesarean:No,notalltwinsareautomaticallydeliveredviacesareansection,despitepopularbelief.Itisactuallypossibleandcommonfortwinstobedeliverednaturally,withnaryascalpelinsight.
C-sectionsareoftennecessaryforanumberofmedicalreasons,butdon’tautomaticallyassumethat
alltwinsarebornviathismethod.They’renot.
5.
IdenticalTwinsareGenetic:Whilethereisageneticcomponenttofraternaltwins,identicaltwins
arecompletelyrandom,soit’sirrelevantwhetherornottwinsruninthefamilyornot.Theresultofa
fertilizedeggsplittingafterconception,identicalsareanunexplainedoccurrenceinnature.
6.
AllTwinsFeelEachOther’sPain:Whileitistruethatsometwinsdofeeleachother’spain,itisnot
aguarantee.Thereisnomysterytothiseither.Ithappenssimplybecausetwopeopleshareanextremelyclosebond.Youdonotneed
tobeatwintohavethisgift.Idohaveitwith
mytwinsister.Infact,therehavebeen
numeroustimesthatco-workersnoticedme
limpingandaskedwhatwaswrong,
№ towhichIreplied“Mysister’skneeisacting
up.”Ialsohaveitwithmybestfriend.
Allittakesisbeingtotallyhonestandopen
4
andreallycaringabouteachother.
Famous
Twins
Identical
•
Mary Kate & Ashley Olsen
(Actors/Entrepenerour)
•
Tia and Tamara Mowry
(Actors)
•
Linda Hamilton
(Actor)
•
Jon Heder (Actor)
•
Jill and Jacqueline
Hennessy (Actor)
•
Jason and Jeramie
London (Actor)
•
James Phelps (Actor)
•
Ronde and Tiki Barber
(Sports)
•
Joel and Benji Madden
(Music)
•
Siva Kaneswaran
(Music)
•
Elvis Presley
(Music)
Fraternal
•
Scarlette Johansson
(Actor)
•
Ashton Kutcher
(Actor)
•
Aaron Carter
(Music)
•
Alanis Morisette
(Music)
•
Kiefer Sutherland
(Actor)
•
Vin Diesel (Actor)
•
Barbara & Jenna Bush
(Politics)
•
Giselle Bundchen
(Model)
•
Duffy (Music)
and finally..
The Minnesota
(Sports)
№
5
™
F
ortunately for me I have the pleasure of
being a fraternal twin. We share alot in common
but nothing too different than regular siblings share.
We were born and raised in Houston, Tx, December
20th, 1985. Twin A born 6 lbs 2 oz and Twin B (me)
born 6 lbs. 5oz. We are Mexican-American. We have
four older
brothers, making us the babies in a family of 8. We have
a birthday tradition with our parents that we have yet to
break. Regardless of what are plans are with friends or
significant others, on the day of our birthday we spend
it to gether with our
parents. We are both
married and that in
№ general has brought us
much closer.
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Twin A
My name is Estanislao Garcia
III. I like to be called “Tanis” for
short. I am a truck driver that
works in the petroleum industry. When I am not working I
like to spend time with my wife
and kids. My hobbies include
anything that has to do with
fixing and building. What i like
about being a twin is having
someone you can relate to and
having someone that is always
going to be there for me no
matter what. Just being a twin is
something special and there is nothing I dont like about it.
My name is Herminia Garcia-Orozco. My nickname, however, is
Mina. I am a student persuing a Bachelors degree in Media
Production from the University
of Houston. I love photography. I
would say that’s my biggest hobby
at the moment. Out of my brother
and I, I am the most creative and
most emotional . That’s probably
just because I’m the girl. :) What I
enjoy most about being a twin is
saying that I’m a twin and hearing
all the trouble we would get into
when we were little. I love how
close my brother and I
have become as adults.
Twin B
№ He is my #1 best friend.
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The
End