ok this is gross and hopefully would never happen, but what if a pair of twins, boy and girl, were 2 have baby

Question

genectically speaking what would happen, i just wonder about weird things some time

would it be an exact clone of one of them, depending on if the male passed on x or y cromosome

Answer 1

♥ ♥ it would be too closely related... and that would be considered incest ....♥ ♥

Answer 2

Progeny are a mixture of the genes carried by parents. The child would likely appear very similar to the parents, much more than normal children, but their actual gene subset would depend on how similar the twins' subset was to start with. Even twins are not 100% copies of each other.

Chances are however that the child would have a series of genetic defects. In cases where close relatives breed, the chances are greater that recessive lethal and recessive harmful mutations are passed on AND expressed in the progeny. Statistically speaking, if the parents have problems, they would be unable to have children as the mother's womb would automatically abort any unfit children, the rule in the realm of possible offspring for this mating.

Answer 3

Nothing special would happen most of the time.

The baby would probably be quite normal....quite contrary to the popular beleif that incest somehow automatically guarantees a retarded deformed child.

If the father OR the mother had any recessive genetic problems, the baby would have a high probability of catching both genes for the trait (bro had 50% of the allele, sis had 50%, odds that both got it are 25%, odds of baby getting both are 6.25%

Inbreeding actually IMPROVES a gene pool, because it "roots out' the bad genes in a bloodline. Locally and immediately, it is bad, but over time, occasional periods of inbreeding are good for a species.

Answer 4

If one is a boy and the other is a girl so they're non-identical twins. They don't have the same set of DNA. So it will be the same as mating of a brother and sister . Usually a normal human being carries around 3 or more harmful alleles which are recessive. In asexual mating or mating among relatives inbreeding depression happens, the harmful alleles (genes) that were recessive and therefore hidden will now become dominant.
Chances of getting genetic diseases will be high.
In case of identical twins , the ones that share the same set of DNA , mating (which will not happen naturally ofcourse )would be just like cloning one of the twins.

Answer 5

LoL No it wouldn't be an exact clone of one of them thats ridiculous. Every person has 46 chromosomes and we get 23 from our mother, 23 from our father. It is better described as 23 pairs of Chromosomes because that is how our Karyotypes(our description of our chromosomes) are read. The sex chromosome's for a woman are XX and for a male XY. When the chromosomes are paired one from the male and one from the female most of the time they are different. For example if a male had the dominant gene for blue eyes and a recessive gene for green eyes those specific chromosomes would be read Bg (capital b for the dominant blue gene and lowercase g for recessive green eyes gene) and he impregnated a woman with two dominant green eye genes(GG) their childs chromosome makeup for eyes would be read BG because he or she got one dominant gene from each parent. This would give them a 50/50 chance of having green or blue eyes or one of each in rare cases. Moving on... Incest children have high risk of diseases and conditions that may be harmful since the genes they are working with are not different enough to off-set these conditions. One receives one set of chromosomes from each parent and when the parents have similar genes, the recessive genes that are mutated or genes that represent bad qualities may be paired with the exact same gene, causing that trait to be evident. Yes, in most cases, these are recessive genes. So once again since the chromosomes are similar they get confused and the baby ends up having more or less chromosomes than the average person giving them a birth defect. (down syndrom, klinefelter syndrome, etc.) There are different birth defects for the similar genes paired. Hope this was of some help.

Answer 6

The kid will have characterisitics of the boy and the girl. Also, when a baby comes from two related people, it could have some diseases that are inherited by heredity (such as pyphoria, which is very uncommon). The child would have a variety of genetic defects. The baby could be retarted and somewhat deformed.

Answer 7

well for this one there a lot of probablilities but way less than any two normal people having a baby.
regardless of them being twins nothin will really happen the kids will probably come out just fine it's just like in the ratio of any other woman having a baby and the percentage of chances that the child will be healthy, except they might have come out lookin exactly like one parent or both parents. one of them like most twins might happen to be twin bearers and produce twins. but parents on a whole each contribute 50% of their gametes to their kids and if the parents are twins and are brothers and sisters they probably have SOME of the same 50% of gametes for each different trait. to break it down- parents A gave 50% each to the child, parents B (the twins parents) gave 50% each also which of course is 25% of both their parents, parent C (the twins) will turn out giving 50% also which is of course 25% from the girls mother, father and the boys' mother and father as well but if they both have the ame parents then they end up giving the same 50% of gametes they got or the percentage might lower to (eg. about 85%)due to recessive traits but the fact of the matter is that there is a probability that they can produce something identical to them maybe of ninety sumthin percentage of another them!!!!
(it's sorta like a father having a child with his daughter she already have his 50% gamete contribution so from her 50% it's gonna be 25% of her mothers dominant traits and another 25% of her father's traits so the kid will end up having 75% of the father's gametesand only 25% from the girl (the mother)
THAT'S JUST CREEPY!!! N WEIRD AND DID U ALSO KNOW THAT WOMEN CAN GET PREGNANT FROM MALE ANIMALS!!!! (the bible mentioned it!)

Answer 8

it would not be a clone, the 1st answer is correct. There is no such thing as identical twins that are different gender.

And the odds are slightly higher that it will have a problem such as retardation, but hardly guaranteed.

EDIT

PEOPLE!!! This is a SCIENCE forum! If you don't know the answer, please do some research!! There is nowhere NEAR a 90% chance of retardation!

Answer 9

Since they are if different genders they are not identical twins. Therefore, it would be the same as any brother and sister having a baby. The chance of genetic defects is pretty high.

Answer 10

My postulation is the child would be possibly deformed and definitely retarded. There's a weird answer to your weird question!

Answer 11

It would be no different from any other brother/sister union -- the kid would be at a great risk of expressing a recessive genetic disease