what is it when human body parts grow within another human. I think it has to do with a twin embryo/fetus.?
340958
I read an article about this recently. It's called fetus-in-fetu, and it happens only about once in 500,000 births.\n\nAn infant girl in Pakistan recently had an operation to remove two fetuses that had grown inside of her while she was in her mother's womb. I think that she died the next day.\n\nThere is an article about it below. It sounds pretty horrific.
862246
look at your body. When you grow, cells divide and grow almost every second mitosis occurs in yuor own self. that is how you grow, repair yourself, and improve your general figure.
102124
Conjoined twins occur when one egg splits to become two identical eggs. The day the ova splits determined what the identical twins will share. if the ova splits between 4-8 days after fertilization, the embryos share a chorion but have their own amnion.If the ova splits around the 8th day, embryos will share both a chorion and amnion. this type of twinning is called Monoamnionic/monochorionic. If the ova splits around the 12th day, the embryos will be conjoined.\n\n\nTypes of conjoined twins\n\n\nCraniopagus: Cranial union only, about 2% of all conjoined twins. \n\nPygopagus: Posterior union of the rump, about 19% of all conjoined twins. \n\nThoracopagus: Anterior union of the upper half of the trunk. The most common form of conjoined twins (about 35%), it always involves sharing the heart. \n\nCephalopagus: Anterior union of the upper half of the body with two faces on opposite sides of a conjoined head. Extremely rare. The heart is sometimes involved. A combination of types 3 and 4 is called epholothoracopagus. \n\nParapagus (sometimes called diprosopus): lateral union of the lower half, extending variable distances upward, about 5% of all conjoined twins. Heart sometimes involved. \n\nIschopagus: Anterior union of the lower half of the body, about 6% of all conjoined twins. Heart not involved. \n\nOmphalopagus: Anterior union of the midtrunk, about 30% of conjoined twins. \n\nParasitic twins: Asymmetrical conjoined twins, one twin being small, less formed, and dependent upon the other. \n\nFetus in fetu: Situation in which an imperfect fetus is contained completely within the body of its sibling.
982540
Growth depends on other factors as well, like nutrition and environment. When I started high school, there was a pair of identical twin brothers in my class. One was a three-sport athlete, the other smoked a lot (which depletes nutrients). By the time we graduated four years later, there was a six inch difference in their heights and you had to look carefully to see that they were even brothers.\n\nI have absolutely no idea about their 'everythings'. Or how nutrition and exercise affects the growth of said euphemisms, but if it can affect height and muscle mass, I don't see why that one organ should be exempt.
271557
It's from puberty (about 10,11,12 these days-must be the streroids in the meat we eat) through later teens (18,19,20). Then again when she is pregnant. Another time would be during implants.\nAnd usually, it is common for both of them to get bigger at the same time, not just a "chosen" one (as your question suggests)
330971
Twins can occur either because a single embryo splits in two during the early stages of development (when it's only a couple of cells) or because two eggs are fertilized.  More than two babies can probably theoretic result from the splitting of one embryo twice (but I've never heard of this one happening) or two eggs are fertlized and one of them splits into two babies (i.e. you'd have two identical twins and one ferternal one).  Triplets are extremely rare, and more than three babies almost never occurs naturally.  Multiple pregancies are more common with in vitro fertlization, where multiple eggs are fertlized and injected into the mothers uterus and sometimes more than one implants.  IVF most often produces a single child, but may result in up to seven.  However, even just twins are typically smaller than other children at birth, and triplets and beyond typically have serious medical problems.  A pregancy resulting in more than three healthy babies is virtually unheardof.  A uterus can only hold so many babies.  Quadruplets, quintuplets, etc. are typically born extremely prematurely and there usually wasn't enough resources to go around even when the were in the uterus, so they wind up with congenital and developmental disabilities.
174310
i love loaded questions like this one... gets people thinking.... the fetus IS a person.  fetus and embryo are Latin words meaning young one and little one ... translation... BABY!  18 days after conception the heart begins beating... and if you ask me, if it has a beating heart it must be a life.  many people would be outraged if they saw someone cut dog or a cat into little pieces, yet those same people will deny that it is a baby even though the thing the abortionist removes has facial features, fingers and toes.  Good question.  if you would like more info on this topic please feel free to email me or contact me on messenger.
486251
Because when they are a fetus in the womb both males and females grow in the same way upto a certain time when sexual charcteristics develop. \nMales stop growing in that area cause they do not need them for survival whereas females need them for breastfeeding so development continues.  \n\nI think apes have them to!
820365
A 'person' is identical to another 'person' if both consciousnesses encode the same information and follow the same process of consciousness, with the same sensory input.\n\nImagine instead of changing hair colour, the genetic change is a single nucleotide on a part of your DNA that has no effect on the functioning of your brain (literally no effect), then you as a person would theoretically develop exactly the same information in your brain, and your brain would function exactly the same, and your senses would be exactly the same, so you would be identical people.\n\nInterestingly, if you were a geneticist and examined the sequence of your own DNA, and looked at the nucleotide that is different (say G vs. T), then at that instant, your mind would no longer be identical to your 'other self's' mind, although they would be very very similar. And again, continuity has nothing to do with it.\n\n've also heard this 'Doppleganger theory'. I don't think that it it likely for the following reason: It is assumed that if we take a given individual and contrast that with the number of people on the planet that statistically speaking there should be a person who looks the same. However, this theory says a bit more than that- it says that every individual has a twin. So if you thought that a single person having a twin was unlikely, then just imagine the probablity that everyone has a twin.\n\nIn any case so what if we have a twin? I'm not sure that it would make any real difference to our lives. Moreover, if by twin we mean someone who looks like you then how precise does that similarity need to be? After all, they may have the same facial features as me, but they might have a different skin-colour, or maybe they have one leg shorter than the other.
886964
there is when twins are born
81550
We can’t grow another toe because our body plan is set  genetically before we are born. The body grows according to that plan, not according to what the owner wants. The plan says we get 10 toes, so we get 10 toes.\nWe can no more grow another toe than grow taller simply because we want to. Growth is determined by the genetic plan. You can’t change it.
57763
are you not in high school yet? Well, two people have sex, sperm tries to make it to an egg in the female body once it does it latches on germinates and then a fetus is made. fetus grows into baby inside amniotic sac, once baby is born comes out of cervix and umbilical cord is cut and theres ur baby.
571791
It is medically possible at this point in time. A fertilised human egg (that has already made contact with sperm) is frozen while it is still a single cel and hasn't duplicated. Under a microscope scientists insert a needle and remove the cell nucleus that contains the DNA of the merged egg and sperm. They then insert a nucleus from the host person that contians their own DNA. The cell is then allowed to divide and continue growing, at the right time it would be placed within a surrogate mother like test tube babies until a baby is born with the exact DNA of the host person. Barring developments later in gestation such as the mother's diet and condition, the child will be an exact duplicate of the host who's DNA was used, until social factors kick in
268586
An organism can be described as a combination of organ systems in a anatomical point of view.But if u want to know \nhow organs,made separately as independent entities are combined to form the organ, then there is no answer for that.\nfor your information during development after gastrulation,organogenesis occurs and this leads to formation of organs and by virtue of all the organs we can see development of organism.Organogenesis is a complex mechanism and this involves,complex communication betwwen cells of difeerent germ layers,differential gene expression,cell movement,development of protien gradient,discreet comparmentisation and many more .
1048941
The development of twins.\n\nA single ovum is released from the ovary.\n\nThe ovum is fertilised by one sperm.\n\nThe zygote divides to form an embryo.\n\nThe embryo splits into two identical embryos.\n\nEach embryo completes its development.\n\nSo, twins are identical because they each contain copies of the same set of genes.
332835
an embryo is a mass of cells dividing and whatnot.  a fetus is when signs of life are discernible
167234
Probably has to do with x & Y chromosomes has to do with genetics to make baby a boy or girl