how many chromosomes does a female egg have and a male sperm???? give sites please!?
596998
A female egg has 23 chromosomes. A male sperm has 23 chromosomes. Thus, when a sperm fertilizes an egg, the embryo has 46 chromosomes. Women have two x chromosomes, whereas males have an x and a y. Each contribute one. The woman will always contribute an x. If the man contributes an x, the child will be female. If he contributes a y, the child will be male. Abnormalities can be caused by an added or subtracted part or whole of a chromosome. For example, trisomy 21, or down dyndrome, involves an extra chromosome. Kinefelter's involves a child having an xxy genotype, rather than the normal xy for a male.
312139
A human parental cell (or germ cell) has 46 chromosomes or 23 pairs (2n).
759601
What species?  There are 23 chromosomes in a *human* sperm cell.\n\nIt is very important to say what species you are talking about, because, say, a dog sperm cell has 39 chromosomes; a cat sperm cell has 19, and so does a pig's; a horse sperm cell has 32; etc.
635748
My husband and I just had our 3rd child...another GIRL.  Yes that's right we have 3 daughters.  So, we asked why are we just having girls?  We were told that yes the male is the determiner. O.K. we got that but why all girls and no boys?  We were told it depends on which chromosomes, the X's or Y's are stronger.  Then that one will make it through and be able to fertilize the egg.\n \nI also believe that it's what GOD has planned for you.\n\nHope this helps.
617905
First of all we have 23 pairs of chromosomes (or 46 chromosomes), and monkeys have  22 pairs of chromosomes. Big deal right? WRONG. When humans make gametes (sperm and egg) each gamete contains a one copy of the hosts DNA, therefore each gamate only contains 23 chromosomes. When the sperm reaches the egg they combine together (zygote) to from a cell that has 46 chromosomes. Any deviation from this number makes the an embryo inviable. ( we wont get into ploidy or trisomys here). Therefore if a human and an ape mated, the chromosome count coming from the human would be 23 and the money would be 22 making the chimera have 45 chromosomes. First of all essential genetic coding inforemation is lost. (AN ENTIRE CHROMOSOME IS MISSING), you have changed the specie. You have created an alleuploidy. (only viable with some plants). The chromosomes in each species are of different sizes. This totaly screws up the cellular functions and inhibits a proteins job. They would not be able to reproduce. And please do not get me started on Mullers moprhs in terms of loss of genetic information, regarding epistasis, incomplete dominance etc.... All you need to know is it would be inviable because the chromosomes are of different numbers, and the chromsome sizes are different.
559453
GO 2 ENCARTA.COM, MAYB 21 OR 13 CHROMOSOMES EACH
890925
Men typically have one X chromosome and one Y chromosome in each diploid cell of their bodies. Women typically have two X chromosomes.
182296
This has already been asked today! \nI'll repeat the answer...the reason is all embryos start out female until about six weeks when the male sex chromosome kicks in for a male embryo. The embryo then begins to develop all of its male characteristics. Men are left with nipples and also some breast tissue.
1032481
Haploid cell have only 1 set of Chromosomes(n) Some organisms, when they reproduce asexually, create other organisms, whose cell are haploid. But when they reproduce sexually, the resulting organism is diploid, meaning that it has two sets of chromosomes (2n), once from each parent.\n\nOvum is the female egg (gamete), before fertilization. An ovum is haploid. The zygote is an ovum that has been fertilized with a sperm. The zygote is diploid.\n\nA gene is a sequence in the DNA that codes for something in particular. Chromosome is the continuous strand of DNA, including genes and non-coding sequences.
1064379
No. remember the sex depends on the sperm so that means that if a sperm carring the girl coding fertilizes the egg then it will be a girl but if one carring the boy coding fertilizes the egg then it will be a boy. \n\nAdded to this is that each sperm carries different coding so besides there being male and female sperm there are differences among them all.
1127866
For humans, we need a 1 pair of chromosomes (#1-23).  If we didn't reduce our chromosome, the next generation would carry 2 pairs of chromosomes and that would be incompatible with life.  Our sexual cells (sperm and egg) has 1 set (not a pair of them) of chromosomes so that the set from the egg and the set from for sperm together makes a human with 1 pair of chromosomes.
692724
it is possible that half of the chromosomes in an ovum are always paternal, but that is not always the case... \n\nbecause in an organism with 56 chromosomes, even if crossing-overs are not taken in consideration, there are still 268,435,456 possible combinations of the gametes. there's a chance that all chromosomes in the ovum would be paternal. there's also a chance that all chromosomes in the ovum would be maternal. and there's also chances of any other combinations in between like more maternal than paternal chromosomes, or more paternal than maternal chromosomes, or equal numbers of paternal and maternal chromosomes.
972049
It is determined by the sperm cell involved in the conception.\n\nThe sperm cell carries either an X chromosome or a Y chromosome (remember that dad is male, so he has XY).\n\nThe ovum (egg cell) always carries an X chromosome (mom is XX).\n\nSo if the sperm cell carries an X chromosome, the resulting embryo is XX, and will develop into a girl.  If the sperm cell carries a Y chromosome, the resulting embryo is XY, and will develop into a boy.
473864
Genotypes of man and woman : DdPp x DdPp\nPossible gametes of man and woman: DP Dp dP dp X DP Dp dP dp\nChildren: I guess its a dihybrid cross with 9:3:3:1 ratio of phenotypes since you have not mentioned the kind of inheritance.
716212
normal cell has 23 pairs of chromosomes (46 chromatids)\nbefore mitotic division the number doubles to 46 pairs (92 chromatids) the chromosomes are arranged as sister chromatids joined by the centromere and aligned with their copies (this is where recombination events can take place). the pairs are then pulled apart and separated in to the two new cells (each with 23 pairs). \n\nNote: for meiotic division (production of gametes (sperm and egg)) 23 pairs of chromosomes are divided in to 2 lots of 23 single chromosomes.
756934
Meiosis consists of 2 nuclear divisions that reduce the # of chromosomes to the haploid # (n) in preparing for sexual reproduction. \n\nThe fertilization of the haploid cells, sperm and ova (gametes), is the diploid cell (zygote) which gives a 50% chance of daughter cells being maternal or paternal for each chromosome. not sure on the 1/8 chance of paternal chromosomes.\n\n# of possible combinations = 2 to the nth power (2 ^n)\nso, if 2n=6, then n=3 and there is 2 ^3 = 8 number of combinations.\n\nJust FYI, In humans with 23 pairs of chromosomes, a gamete  could have 2^23 or 8,388,604 possible combinations of chromosomes from that parent. Any couple could have 2^23 ×  2^23 or 70 trillion different possible children, based just on the number of chromosomes. \n\nIn addition, crossing-over, in which the two homologous chromosomes of a pair exchange equal segments during synapsis in Meiosis I, can add further variation to an individual’s genetic make-up.
98654
Do refer to websites, such as Wikipedia, Vivisimo or Google; you will find countless articles, links and so on. Start with any scientific term, such as 'chromosome' and it will get you somewhere. Kimballs Biology Pages are a wonderful bet too.