Is the chromosomes number related to the complexity of the organism?
151630
Yes, to a point it is. However, keep in mind that Mules have 3 more chromisomes than humans....
531829
46 chromosomes or 23 pairs of chromosomes per cell, consisting of 22 pairs of autosomes, and two sex chromosomes; considering the body has over a trillion cells...\n That is basically 46,000,000,000,000 chromosomes!\nThere are some rare cases when there is an extra chromosome(ex: Downsyndrome) or one less chromosome in each cell.
184652
All organisms are complex, but some are more complex than others.
183355
Chromosomal DNA is what determines who we are as individuals.  There are 23 pairs of choromosomes.  There are 22 pairs of autosomes which are alike in male and females and then thereis one pair of sex chromosomes.  XX is female.  XY is male.
954367
hi,\n\nnot all the plants are alike. different plants will have different number of chromosomes.\n\nEg: Rice (Oryza sativa) will have 12 chromosomes (n=12, 2n=24)\n\nCultivated Cotton (2n=52)\n\n wheat (Triticum, 2n=42) \n\n\nArabidopsis 2n = 10 \nRye 2n = 14 \nMaize 2n = 20 \nCultivated tobacco 2n = 48 \nFern 2n =1200\n\n B. oleracea (broccoli and cauliflower) has a haploid chromosome number of n=9 \n\n the haploid number for B. campesteris (turnip) is n=10. \n B. napus has a haploid number of n=19.
831782
i have 56 chromosomes...im special
719520
the ploidy no is 2n\nbut the dna amount is double. it changes in the metaphase or late prophase
582124
The fern.  I've found sites listing species that have 480 or 768 or  even 1200 chromosomes!\n\nNo humans are not the "best" and no it's not true that "Acording to evolution the more an organism evolves [whatever that means] the more chromosomes it gets."\n\nHumans aren't even in the running for most chromosomes.  Many plants, and even the lowly amoeba has us beat.  The butterfly has 380.\nOther contenders: \nWhite Ash 138 \nCarp 100\nGoldfish 94 \nSweet Potato 90 \nTurkey 82\nChicken 78 \nDog 78 \nDuck 78\nHorse 64 \nCow 60 \nSilkworm 56\nCotton 52 \nAmoeba 50 \nChimp 48\nTobacco 48 \nHuman 46
363119
Haploid\nHaploid cells bear one copy of each chromosome.\n\nMost fungi, and a few algae exist as haploid organisms. Male bees, wasps and ants are also haploid. For organisms that only ever have one set of chromosomes, the term monoploid can be used interchangeably with haploid.\n\nPlants and other algae switch between a haploid and a diploid or polyploid state, with one of the stages emphasized over the other. This is called alternation of generations. Most diploid organisms produce haploid sex cells that can combine to form a diploid zygote, for example animals are primarily diploid but produce haploid gametes. During meiosis, germ cell precursors have their number of chromosomes halved by randomly "choosing" one homologue, resulting in haploid germ cells (sperm and ovum).\n\n\nDiploid\nDiploid cells have two copies (homologs) of each chromosome (both sex- and non-sex determining chromosomes), usually one from the mother and one from the father. Most somatic cells (body cells) of complex organisms are diploid
833342
It divides the number by two, this way the chromosomes don't double with each generation. That would be insane.
706287
Chromosomes are allotted numbers according to their sizes. So, chromosome 1 is largest and chromosome 22 is smallest. The 23rd pair of chromosomes i.e., X and Y are sex chromosomes and hence they're allotted different representations. However, X lies between 7th and 8th chromosome if arranged according to the size while Y is the smallest (smaller than the chromosome 22).
1112160
as to number of chromosomes, i couldn't tell.\n\nhowever, as to arrangement, that's a spatial-organization thing. DNA's a long, long, long molecule, and during cellular division you don't want to lose any of it, break it, tangle it, or any other physical issue you can imagine. chromosomes are essentially DNA that's been thickened up by coiling it back on itself several times (think of when you twist a piece of yarn and you eventually get a phone-cord like coil, and if you keep coiling that, you get a supercoil, etc) and by wrapping it around histone proteins. this basically keeps it from getting buggered up during mitosis and meiosis, and keeps it organized when certain genes are not being transcribed; when you DO want to transcribe a gene, it's readily uncoilable.
743521
Aneuploidy is a condition in which the number of chromosomes is abnormal due to extra or missing chromosomes, in other words, it is a chromosomal state where the number of chromosomes is not a multiple of the haploid set. Normal diploid species have 2n chromosomes, where n is the number in the haploid set. Aneuploid individuals would have 2n-1 chromosomes (monosomy), 2n+1 chromosomes (trisomy), or some other such arrangement.\n\nA change in the number of chromosomes can lead to a chromosomal disorder. Aneuploidy is common in cancerous cells.\n\nMonosomy\nMonosomy is the presence of only one chromosome from a pair in a cell's nucleus. Partial monosomy occurs when only a portion of the chromosome has one copy, while the rest has two copies.\n\nHuman genetic disorders arising from monosomy are:\n\nX0-Only one X chromosome instead of the usual two (XX) seen in a normal female, also known as Turner syndrome \ncri du chat syndrome -- a partial monosomy caused by a deletion of the end of the short p (from the word petit, French for small) arm of chromosome 5 \n1p36 Deletion Syndrome -- a partial monosomy caused by a deletion at the end of the short p arm of chromosome 1 \n\nTrisomy\nA trisomy is the presence of three, instead of the normal two, chromosomes of a particular numbered type in an organism. Thus the presence of an extra chromosome 21 is called trisomy 21. Most trisomies, like most other abnormalities in chromosome number, result in distinctive birth defects. Many trisomies result in miscarriage or death at an early age.\n\nA partial trisomy occurs when part of an extra chromosome is attached to one of the other chromosomes, or if one of the chromosomes has two copies of part of its chromosome. A mosaic trisomy is a condition where extra chromosomal material exists in only some of the organism's cells.\n\nA trisomy can occur with any chromosome. Most trisomies result in spontaneous abortion; the most common types that survive to birth in humans are:\n\nTrisomy 21 (Down syndrome) \nTrisomy 18 (Edwards syndrome) \nTrisomy 13 (Patau syndrome) \nTrisomy 9 \nTrisomy 8 (Warkany syndrome 2) \nTrisomy 16 is the most common trisomy in humans, occurring in more than 1% of pregnancies. This condition, however, usually results in spontaneous miscarriage in the first trimester.\n\nTrisomy involving sex chromosomes in humans includes:\n\nXXX (Triple X syndrome) \nXXY (Klinefelter's syndrome) \nXYY (XYY syndrome) \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.
15299
25,000\n\n\nTypical numbers of genes in an organism\n\nThe following table gives typical numbers of genes and genome size for some organisms. Estimates of the number of genes in an organism are somewhat controversial because they depend on the discovery of genes, and no techniques currently exist to prove that a DNA sequence contains no gene. (In early genetics, genes could be identified only if there were mutations, or alleles.) Nonetheless, estimates are made based on current knowledge.\n\n\norganism genes base pairs\nPlant <50,000 <1011\nHuman, mouse or rat 25,000 3×109\nFruit Fly 13,767 1.3×108\nHoney bee 15,000 3×108\nWorm 19,000 9.7×107\nFungus 6,000 1.3×107\nBacterium 500–6,000 5×105–107\nMycoplasma genitalium 500 580,000\nDNA virus 10–900 5,000–800,000\nRNA virus 1–25 1,000–23,000\nViroid 0–1 ~500
687896
A human somatic cell is a "body cell" (not one involved in sexual reproduction). Therefore, there are 46 chromosomes in a somatic cell. This is also the diploid number. Since we have two sets of chromosomes (one comes from mom and one from dad), we say algebraically that the diploid number = 2n = 46 (in humans). Therefore a haploid set = n = 23 in humans (this would apply to sperm and eggs).
1096030
As a species, no. A sexually reproducing species has to have an EVEN number of chromosomes.\n\nAs indivdiuals, sure. There are thousands of individuals walking around today who have 47 chromosomes.