what can a DNA test reveal if parthenogenesis in humans is possible?
436168
Despite the previous answer, there is no reason to think parthengenesis is impossible in humans.  All it would take is a mistake in meisosis where the nucleus did not duplicate and separate and you would have an egg identical to the mother ready for implantation.\n\nThe difficulties that affect cloning would not be an issue.
555226
I've never heard of it, but it could happen. I mean, monocygote twins (identical twins) are exactly alike, their development is the same like any other baby, except for the company :) So I guess it could happen, I've never read a report case on it. The odds of an hermaphrodite are very very low combined with the chances of monocygote twins, the odds are almost impossible (just guessing).
183355
Chromosomal DNA is what determines who we are as individuals.  There are 23 pairs of choromosomes.  There are 22 pairs of autosomes which are alike in male and females and then thereis one pair of sex chromosomes.  XX is female.  XY is male.
678915
no, I don't think they arrived fully formed male/female anything.  the genders started as single cells that split off in asexual reproduction, then perhaps some hermophodite reproduction then perhaps 2 genders.  There are some worms that can fertilize themselves.
681600
In a DNA sibling test, two people are tested to determine whether they share the same biological parent or parents. Full siblings are individuals who have the same biological mother and the same biological father. Half siblings share only one parent. \n\nSince siblings have the same parent(s), they have matching genes much more often than do two unrelated individuals. When matches between two potential siblings are found, calculations are made to determine the probability that a sibling relationship exists.\n\nThe DNA sibling test usually shows a number of genetic matches in true biological siblings. In such cases, the DNA sibling test may show the probability of siblingship to be greater than 99%, provided the tested alleged siblings inherited genes that are not commonly present in the population. The DNA sibling test is a useful and informative test. However, testing additional known family members (in addition to the potential siblings) greatly improves the accuracy of this DNA test.
333066
As far as is known, yes.\n\nParthenogenesis has been the subject of many questions on this board lately, I'm not sure why.  Parthenogenesis is when a female reproduces without the aid of a male, simply creating clones of herself by not splitting chromosomes during egg cell formation.  Parthenogenesis is commonly recorded from fish, amphibians and reptiles.  In fact, some lizards are male-less and reproduce solely by parthenogenesis.\n\nHowever, parthenogenesis has *never* been recorded from mammals.  This doesn't mean it can't happen, of course.
193025
kinda throws a kink in the debate about homosexuality hermaphrodites can be either male or female only a genetic test at the beginning of their life can tell as they get older and go through puberty their true sex becomes evident
291408
Yes of course a test can be done. If two people are married and the child is not biological he is only the STEP father.
327006
You're trying to say you have a synthetic chromosome. I would check all the experiments for contamination, and check the cells for endogenous expression before jumping to that conclusion. There are a lot of hurdles to leap, as mentioned in the other posts.
334017
I think that the notion of parthenogenesis is long obsolete and it is considered a fallacy by the scientific community. Maybe you mean something else?
524113
everyone has the same amount of genetic information.  a child's dna is a combination of both parents. a mother's dna is irrelevant in a paternity test because the test's goal is to see whether the child has any genetic information from the father.\n\ncrudely put, it works something like this. imagine chromosomes are marbles. the mother has 46 red marbles and the father has 46 blue marbles. each parent will donate 23 marbles to the child so the child will have 46 as well. a paternity test compares the blue marbles of the child against the proposed father. if they match, then the father has been determined. but there's no need to examine the child's red marbles because the mother donated those.\n\nthe analogy can be drawn out to include various genetic issues that arise in gametogenesis (the process of making sperm and egg cells). but hopefully this answered your question.
728140
No, even if a man really believes that the baby is his, and takes a polygraph, it doesn't prove that the baby is his.  She could have had sex with several men the baby could be any of those potential fathers.  \nPaternity must be proven by a paternity test to show that you contributed to the DNA or not.
972794
One of two ways:\n\nGenetic anomaly.... some odd comination of sex-genes make the body develope more than one sexual organ.\n\nChimaras.... where a male and female fetius fuse together to make one baby with two seprate sets of DNA and two sets of sexual organs.\n\n\nEther way will result in a intergender child.... and makes up about 1/100th of all births. (though many are altered at birth to be more male or female rather by the parents or by doctors who don't tell the parents it happened)\n\nOnly about 1/10th of the intergender children though two sets of developed sexual organs and can be considered hermaphrodites..... the rest one or both of the sexual organs are underdeveloped and never fully develop.
775327
Yes, DNA manipulation in post-natal humans, Has Already Been Done, With Some Success, Consider BMT (Bone Marrow Transplant).
848996
No. A baby gets his DNA from mom and dad. Dad contributes 1/2 mom contributes 1/2. (Yes, this a simplified answer.)\n\nDNA testing can prove paternity because it looks for genetic markers that come from the dad.
322976
Just a clarification-There arent any "true" hermaphrodites in humans-That would indicate that they could both become pregnant *and* impregnate another.  Humans sometimes can have partial external genitalia of both male and female, but do not have both functional testes and functional ovaries.\nAny medical school library would have a great deal of information on this.
981788
Ans. C\nWhat human would subject themself to this? Besides, a human probably couldn't produce enough offspring in a lifetime to make the test reliable.