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What is the probability of a girl getting pregnant if hymen is not broken and guy doesn't release sperm?
The probability is quite low, BUT it isn't zero, and this is a very risky practice. Human nature being what it is, the intention not to break the hymen and not to release sperm is one of those intentions that lead to Hell (so to speak). Beyond that, there is the risk of various diseases that is not in the least diminished.
What are two characteristics of semen that enhance the probability of fertilization?
The first is the concentration of sperm cells in semen - the higher the concentration better the possibility of conception. The second is the percentage of normal sperm cells - the lesser the number of abnormal sperm cells, the better the possibility of conception.
What is the probability that in an organism with a haploid number of 15 a sperm will be formed that contains all 15 chromosomes whose centromeres were derived from maternal homologs?
1/33000
How do you increase the probability of having a baby boy child?
According to the Shettles method, sperm containing the y (male) chromosome tend to be "faster" than those containing the x (female) chromosome, so sex right when ovulation occurs or shortly after should increase the odds for a boy because the "boy" sperm will win the race to the egg. Sex two to four days prior to ovulation tends to favor girls because the sperm with the x-chromosome tend to live a longer than the y-chromosome containing sperm so by the time the egg arrives most of the "boy" sperm are dead.The Whelan method advocates the opposite of the Shettles method. The Whelan method suggests intercourse four to six days prior to ovulation to increase the likelihood of fertilization by male sperm.Of course both methods require knowing exactly when ovulation occurs so relying them to choose the gender would only slightly increases the chance of getting the target gender - and, in case you didn't notice, they give opposite advice...There are only 2 proven techniques that may affect the gender of the baby: 1) sperm sorting and 2) IVF with the use of PGD.Sperm sorting works on the premise that it separates the X and Y-sperm by use of centrifugation. During centrifugation, controlled spinning causes particles in a sample to become sorted into layers according to density of those particles. Sorting separates the more dense X-sperm from the lighter Y-sperm. One half of the sperm normally produced by a healthy male will carry the Y-chromosome producing a male child, and the other half of the sperm will be the X-chromosome producing a female child. By altering the number of one chromosome or the other by separating the layers, one is increasing the chances of producing a child of a specific gender. During sperm sorting, the sperm cells are separated from the seminal fluid, the sperm are concentrated into healthy and motile sperm, abnormal sperm is filtered out, and finally the separation of the X and Y-sperm concentrates the sample to the desired gender. The remaining sample is more likely to result in a successful pregnancy and will increase the odds of the desired gender group. This technique is widely used and is a standard process in IVF and IUI procedures. After the sperm is sorted, the sample will be inseminated into the woman which is an in office technique. Using sperm sorting improves the odds of a boy to approximately 78% - 85% instead of 50%. If trying for a girl, using sperm sorting yields about 73% - 75% girls.The technique PGD is the only method which can virtually guarantee the gender of your choice because embryos are tested for gender before they are implanted in the womb. These tested embryos are created for the purpose of IVF. The eggs are harvested from the mother (or donor) and the sperm sample is taken from the father (or donor) and the embryos are created in the lab for later implantation. These embryos are subject to a biopsy procedure on the third day of growth that allows a single cell to be analyzed for male or female chromosomes. While this is the most accurate technique, it is by far the most involved and most costly. PGD is commonly used for couples with a family history of a genetic disorder and older mothers are more likely to have a baby with genetic birth defects. PGD is not 100% reliable and only tests for specific defects, parents should use other prenatal genetic tests, such as amniocentesis or chorionic villus sampling. PGD is expensive and still considered an experimental procedure. Clinics will not allow couples to partake in PGD even if they are willing to pay for the services if the couple simply wants to influence the gender of their child. Screening processes are extremely stringent and in most cases a couple will only be accepted if they have a genetic abnormality they are attempting to avoid. Success rates for this type of procedure are 97-99.9% accurate in couples seeking either a boy or girl.
What is the probability of having a baby boy?
The sex of a child is determined by male sperm. There are only two sexes, so there is an equal (50-50) chance of having a boy or girl.
What is the probabitily that a human sperm cell will carry an x chromosome?
50%
Why is a human cell containing 22 autosomes and a y chromosome a sperm?
Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes -- 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell.
What is the probablilty that a human sperm cell will carry an X chromosome?
The male gamete is comprised, on average, of 50% of the X chromosome and 50% of the Y chromosome.
What sex chromosome does a human egg cell contain?
The sex chromosome typically carried by an ovum is X-chromosome. The sperm may carry either x or y sex chromosome.
Difference between male and female sperm?
Although only males produce sperm, that does not mean that all sperm is male. There are two types of sperm: male and female. Male sperm carry the 'y' chromosome; female sperm carry the 'x' chromosome. If all sperm where male, then there would be no females born. Thus, the difference between male and female sperm is that male sperm carries the 'y' chromosome and produces male offspring and female sperm carries the 'x' chromosome and produces female offspring.
What percentage of human sperm Cells carry an X chromosome?
50 % of human sperm Cells are an X chromosome, the other half are a Y chromosome: {diploid = 2n = 1 chromosome pair; haploid = n = 1 chromosome - including the meiotic single chromosome = n}. All sperm and egg Cells carry one set each of n (23 single) chromosomes. When a sperm and an egg combine either: a) a sperm Cell with the X chromosome merges with the [X-chromosome] egg Cell and the baby will be a girl; or b) a sperm Cell with the Y chromosome merges with the egg Cell and the baby will be a boy.
Are you more likely to have a boy if the father's family are all boys?
It is the sperm that fertilizes the egg that will determine the sex of your baby. Some sperm carry the X-chromosome and some sperm carry the Y-chromosome. If an X-chromosome-carrying sperm fertilizes the egg, the baby will be a girl. If a Y-chromosome-carrying sperm fertilizes the egg, the baby will be a boy.
What sex chromosome is found in human egg cell?
By human egg cell I guess you mean the oocyte (the one produced by the mother). The oocyte always carries the X chromosome, the sperm can either carry the Y or the X chromosome. Interestingly, the sperm which carries the Y is actually quicker than the one carrying the X, maybe because the X chromosome is far larger. So, if the Y chromosome sperm reaches the egg first, the child will be a boy (XY), and if the X chromosome sperm beats him to it, the child will be a girl (XX).
Does sperm contain x and y chromosome?
In humans the male sperm contains EITHER an X chromosome, or a Y chromosome since human gametes are haploid (n) in chromosome number.
What percent of sperm carry the X-X chromosome pair?
Zero %; as in No Such exists. Meiotic Cells [Eggs and Sperm] each contain a single chromosome (n).
Which sex chromosome do sperm cells carry?
Sperm cells are of two types. One type carries a Y chromosome, while the other type carries an X chromosome. This is the reason why the Spermatid is the 'deciding factor' in whether a baby will be male or female. The Ovum always carries an X chromosome.
Why does the sperm determine the sex of the offspring not the egg?
The sex of offspring is determined by the sperm because sperm carries either an X or Y chromosome, while eggs always carry an X chromosome. If a sperm carrying an X chromosome fertilizes the egg, it results in a female offspring (XX), while a sperm carrying a Y chromosome leads to a male offspring (XY).
