If you take a womans egg, remove one of the X chromosomes, replace the one in the sperm with that X, and then use the altered sperm to fertilize another egg, is it possible that two women could have a child with 75% of their genetic makeup?
199588
Not yet, but scientists are working on it. Scientists have successfully grown eggs out of sperm cells in fish (see article). One day it will be possible for gays and lesbians to have biological children.\n\nhttp://www.livescience.com/animalworld/060206_fish_story.html
387984
I dont know much cuz im just in high school and not pro but heres my understanding:\nLets begin with the possibilities. Two sperm cells cleary would not work cuz of the YY issue and that wouldn't techniquelly be human anymore. However, in the female XX would be human. problem is The egg cell has a jelly coat whihc protects it. The one sperm cell that fertilizes uses enzymes to digest it away and the sperm cell must bind to a receptor site. Since we know very little about the protein world and how these receptors exactly work, just like we dont know how EXactly carrier proteins work in plasma membranes, its difficult to figure how to do it. Since implanting and fusing the two nuclei of the eggs would not initiate these receptor cyets, the zygote may not necessarly divide. It would just be a mutated egg like before and a sitting duck. You wouldn't get mitosis since it still techniquelly thinks its a gamete and wouldn't replicate. Also, too my understanding, the egg and sperm nuclei are drastically different in size and also chemical makeup may vary.Thats my assesment of the situation. Again, I'm not an expert but i think that might be enough to answer the question.
577774
yes because the egg comes from the ovary during the menstrual cycle
49203
100% of sons will be colorblind\n100% of daughters will be carriers\n\nYes this could stand up in court because there is no chance that the daughter recieved one of the recessive alleles from her father (because he would have to express the trait if he did).\n\nHowever, the man can still be her father, if a random mutation occured, x inactivation occured on the chromosome containing the dominant allele, chimerism, or perhaps an error in another gene caused the color-blindness...\n\nMost likely though, the man would not be her father. A deduction would not be made only on the fact that the daughter is color blind and the father isn't. A paternity test would need to be done.\n\nAnd I don't know what the hell kittybriton is talking about. People shouldn't attempt questions they don't know the answer to.
538741
Each chromosome within our body (except the chromosomes within cells that develop into sperm or eggs) is created by making a copy of a previously existing chromosome. This occurs during the process called mitosis, during which cells divide for growth or repair. Before each division, the cell makes an identical copy of each chromosome and during mitosis, each of the two new cells receives a complete set of 46 chromosomes.\n\nEach new cell has the same set of chromosomes and the same genetic information as the "parent" cell. This explains why almost every cell in your body has the same genetic information.\n\nA slightly different process takes place during the production of egg and sperm cells. When an egg and a sperm unite at fertilization, their nuclei unite to form the nucleus of a human zygote. If the sperm and egg carried 46 chromosomes, like the rest of the body's cells, then the zygote would have 92, which would be incompatible with life. \n\n\nTo prevent this, a special type of cell division, called meiosis, takes place. \n\nThe process of meiosis begins with a single cell containing 46 chromosomes and results in four reproductive cells (sperm or eggs), each of which carries 23 chromosomes. An important feature of these four cells is that the combination of genes they carry on their 23 chromosomes is a unique mix of the genes present in the original single cell. \nYou resemble your parents because half of the instructions — genes — for making you came from your father and half from your mother. Similarly, your brother or sister also received half of their genetic instructions from each parent, but the set they received is somewhat different from the set you received. That's why they may resemble you, but they are not identical to you. Identical twins receive exactly the same combination of genes and chromosomes.
83070
There is no general answer; one would need to know the exact treatment involved, or at least the drug.\n\nHowever, it's unlikely.  Fertility is a complex mix of factors, including some as random as diet and stress, to the obvious such as exposure to radiation.  I am fairly on top of the medical literature and have never heard of a fertility increase being passed on to a daughter via a mother's treatment.\n\nIt's more likely there are other explanations:\n1) you or the father may be younger then they were.  Age has an enormous relation to fertility.\n2) you or the father may be healthier than they were.  Health (and stress and diet) have a relation to fertility.\n3) the father may have higher sperm count/motility than your parents or your husband's parents.\n4) you are experiencing normal statistical variance in pregnancy, but (to you) it seems like it is highly unusual.\n\nand so on.\n\nMy bet, without knowing more, is on #2 or #4.
223515
i guess by technical defiition, no. Sperm are incapable of becoming humans without an egg.\n\nSo it is no more genocide than dandruff is suicide.
23535
n MITOSIS, the 2 cells that come out of the division (lets call them the daughters), are EXACTLY the same in genetic makeup as the original mother cell. They have the very same DNA and therefore make the same proteins and therefore the cells behave the same.In MEIOSIS on the other hand, the cells are not the same at all. And in fact, this is the point of meiosis - to make new types of cells. You may know that eggs and sperm are products of meiosis, but you not only get a mixing of genes from your mother (from the egg) and father (from the sperm), but the genes inside the egg and sperm are pre-mixed because of meiosis. Thus, genetic diversity!, and an explanation for why you have traits given to you from your grandmother through your father, even though your father may not have that trait (he carries it in his genes for later mixing). This may be a complicated issue in itself but since we have 2 of every chromosome and therefore 2 of every gene (even before the DNA replication that preceeds mitosis), there's a chance that the 2 copies of the same gene are different, one of which shows up in your father and one which you have that you got from your grandmother throuh your father. The mixing, by the way comes about because after the DNA replicates in preparation for cell division. This is neat and involves chromosomes breaking apart and joining back together. Take a look at the animated movie of meiosis at http://www.biology.yale.edu/animatedMeiosis.nclk  - make a point to notice the red and green chromosomes at the beginning and the mixed ones at the end.
592946
hopfully, the sperm banks are still in one peace and also one of the guys can preform a uturine transplant operation on the other guys. we would need a much larger gene pool to work from. i would be happy to assist in the operating room and hold heads as they puke in the first trimester. we women have plenty of eggs to go around for them.
471074
C. The male will only have one X chromosome so there is no way it can be expressed over a homozygous normal XX of a female
89042
no you only get pregnant within a few hours either way of the egg being released
661989
I say NO...its not meant to be this way. In general two men cannot  a conceive a child, nor two women cannot. So therefore theres a reason why same sex shouldn't be. The answer is obvious! Sorry but thats how it goes.
564778
No:\nThey too distantly related.\nAlso their chromosome number and chromosome and shapes and gene layout, and individual genes are vastly different, so they cannot pair up in the fusion that is part of of the fertilisation reaction.
417206
I know of a number of such cases. One lesbian I know took a sperm sample from a man and got pregnant that way. A local drag queen has fathered several children with a woman. It's more common than you'd think, and just not all that unusual. Quite a few gay people have children, whether by the usual biological means or adoption. In some cases, the men were married to women and fathered children before finally coming out of the closet as gay.
294753
I have a friend who has quadruplets.\n\n3 girls and a boy.\n\nShe had AFI - and they implanted 3 eggs.  One egg split, creating idential twins.  There are 3 girls and 1 boy.  Two girls are identical, and the other two look different.
287115
You take your chances. It's the father who determines the sex, and it all depends on which sperm gets to the egg first... the boy sperm or the girl sperm.
343724
Yes he did. Sex linkage in inheritance of color. The percentage of a clutch of birds if mother is yellow and father is normal color pattern can not be accurately predicted. The male offspring  will display the color of the mother, while the female offspring will be the fathers color or any color carried in his background, 25 percent of the female offspring that have the fathers color, they cannot throw anything but that color in their offspring. Some of the other female offspring will be split in inheritance and produce their own color and that of the male they are bred to. But in Parakeets, "sex linkage" plays heck with color inheritance theory.