Describe how this sperm could result in a newborn with monosomy X. How many chromosomes would an individual have in each of their cells?
206110
The normal number of chrom's in an adult human cell is 23 pairs (46 intotal). Insex cells it is 23 single chrom's. (23 in total). So without the sex chrom', the sex cell, wether the ovm or sperm, would have 22 chro's ie 23 - 1 = 22.
622928
A chromatid forms one part of a chromosome after it has coalesced for the process of mitosis or meiosis. During either process, the word "chromosome" indicates a pair of two exactly identical ("sister") chromatids joined at the central point of each chromatid, called the centromere.\n\nA chromosome, by definition, has exactly one centromere. Thus when sister chromatids are pulled apart by the mitotic spindle during anaphase -- that is, when the centromere joining two sister chromatids splits into two centromeres -- then each sister chromatid becomes an independent chromosome.\n\nIn non-gametic, non-dividing human cells, there are 23 pairs of chromosomes, thus 46 chromatids. When it is ready for mitotic cell division, each chromosome will replicate itself during the synthesis phase within its life cycle, making a total of 92 chromatids before dividing, producing two cells each with 46 (remember, since the term "chromosome" is redefined,but still the number of chromosomes remains 46 despite the replication).\n\nIn gametic cell division (meiosis),the cell replicates once but divides twice so that 23 chromosomes are left in each of four egg or sperm cells. (23 chromosomes are each needed from the male and female to combine and make 46 chromosomes for the zygote.)\n\nA common mistake among students is that they think that chromatids always exist; chromatids ONLY exist when a chromosome replicates itself.
417494
Find the gametes of each parent.  Let's say dad is Cc, then half the spermatozoids will be C and half will be c.  For mom, if she's cc, then all the eggs will be c.  This means that a baby would have 50% chance of being Cc and 50% chance of being cc.
62665
Gametes are produced via meiosis\n\nThe chromosomes are seperated into two and go to their respective cells.\n\nMeiosis divides the genetic material in a normal cell if half. A normal cell has 46 chromosomes, a gamete has 23.\n\nTwo gametes combine during infertilization creating a zygot so to grow into a fetus.
483968
Men typically have one X chromosome and one Y chromosome in each diploid cell of their bodies. Women typically have two X chromosomes.
260975
Short answer:\n\nYour genes are a combination of both of your parents genes, and they constitute a full set.  Through meiosis however, a process which creates sperm and egg cells, the cells divide in such a way as to halve their genetic "info".  These halves are carried by the sperm and egg cells, and recombined into a single, new whole through fertilization.
249201
a chromatid forms one part of a chromosome after it has coalesced for the process of mitosis or meiosis. during either process, the word "chromosome" indicates a pair of two exactly identical or "sister" chromatids joined at the central point of each chromatid, called the centromere.\n\na chromosome, by definition, has exactly one centromere. thus when sister chromatids are pulled apart by the mitotic spindle during anaphase - that is, when the centromere joining two sister chromatids splits into two centromeres - then each sister chromatid becomes an independent chromosome.\n\nin non-gametic, non-dividing human cells, there are 23 pairs of chromosomes and thus 46 chromatids.
42489
I am not sure.\nIf one X chromosome is de-activated normally perhaps the extra X chromosome in a polyploid individual is not.\nThe following link does not always open (!!!) - don't know why not. Also note it is PDF format.
456059
human cells contain 46 chromosomes\n\nthey go through a process of mitotic division that basically replicates each chromosome, the original and replicated chromosomes then migrate to opposite ends of the cells, and a cell membrane is formed, thus producing two progeny cells, division and the cycle of the cell is complete.\n\n\nmeotic division is a more complex process, but basically, the daughter cells contain 23 chromosomes, that is 1 of each pair of the 46 chromosomes is present in the daughter cell, where, whether it is a sperm or egg cell, when fused together, provide the fused cell with 46 chromosomes\n\n\n\n\nhope it helped you understand it a little better\n\nthere are however, different phases to the division process and if you like I can send you a link, depends on how much you want to know at present?
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.
295638
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.
8361
This sounds like a homework question. Think about it this way: what does diploid mean, and what does haploid mean? What has to happen for a gamete to form? How many chromosomes in a haploid gamete as opposed to a diploid somatic cell? What happens at fertilization? How many chromosomes would be in a fertilized zygote if you count up what was in each gamete?\n\nHints: a gamete is an egg or sperm; a somatic cell is any cell that is not a gamete; a zygote is what is formed when egg and sperm combine in fertilization. Post again if you're still stuck.
42890
An egg, and a sperm both contain a nucleus which holds half of our DNA (23 chromosomes). All of our other cells contain 46 Chromosomes. In the lab, they harvest an egg from which ever species they are cloning, and they remove the nucleus. They can then take the nucleus of a normal 46 chromosome cell and put it inside the egg- where it's nucleus used to be. The egg then "thinks" it is fertilized and will start to divide, and grow. This embryo is an exact replica of the parent cell. Cloning is a form of asexual reproduction, because sex was not involved in the creation of the new embryo. There are many ethical issues surrounding cloning. Some argue that scientists are "playing God" because they are creating new life. Some say that if a human were to be cloned- it would have no soul because it was not created by God. There are too many ethical issues to type here, but you get the idea. You'll have to decide for yourself where you stand. Hope this helps. good luck in school
317183
having xxx sex chromosome.or a female with turner syndrome
440818
A karyotype can tell two sorts of information to a genetic counselor about an unborn child. First, it can show the sex of the child (XX=girl, XY=boy). Secondly, it can tell the counselor if there are any chromosomal abnormalities with the unborn child. One more common abnormality seen is Down's Syndrome, which occurs from an extra # 13 chromosome. Turner's Syndrome is when there is only one X sex chromosome. Klienfelter's Syndrome occurs when a fetus inherits 2 X and 1 Y sex chromosome (XXY). Patau's Syndrome is an extra # 18 chromosome. These are the sorts of things a karyotype can tell a genetic counselor.\nGood luck with your assignment!
339907
During s-phase of interphase, the genetic material is duplicated.    So #1 is FALSE.\n\nTelophase sees the production of the nulear membrane.  So in effect, new nuclei are formed, making #2 TRUE.\n\nMitosis creates two daughter cells that are diploid, because it is reproduction of somatic (body cells), no production of gametes (which would be haploid).  So, #3 is TRUE\n\nChromosome find their homolougous pair during prophase of Meiosis, NOT mitosis.  Pairing occurs during meiosis so the the gametes that are haploid can be formed. So #4 is TRUE\n\nEach species has a specific number of chromosomes- fruit flies for example have 8 chromosomes, while humans have 46.  So #5 is TRUE.
472697
Both parents for the organisms that the cell is living in!\nIn order to be a functional cell, it needs 46 chromosomes.\n23 of them come from the organisms mother, and 23 from the organisms father.\n\nIt isn't talking about the organism this gamete may become, but rather the parents of the organism that the meiosis is going on in...