how many y chromosome do men have in each cell
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Y chromosome 47, XYY syndrome (simply known as XYY syndrome) is caused by the presence of a single extra copy of the Y chromosome in each of a male's cells. 47, XYY males have one X chromosome and two Y chromosomes, for a total of 47 chromosomes per cell.
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Does having a Y chromosome make someone a man? In fact, there’s a whole lot more to maleness and femaleness than X or Y chromosomes. About 1 in 20,000 men has no Y chromosome, instead having 2 Xs. This means that in the United States there are about 7,500 men without a Y chromosome.
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sex chromosome Y chromosome - the sex chromosome that is carried by men; human males normally have one X chromosome and one Y chromosome genetic science, genetics - the branch of biology that studies heredity and variation in organisms
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How many chromosomes do people have? In humans, each cell normally contains  23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.
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How is male chromosomes identified - XY or YY ? Report Abuse. There is only one pair of sex chromosomes. XX for female and XY for a male. I believe the other 22 chromosome pairs in a human are all for other purposes (though can carry sex linked genes). I hope this answers your question-I wasn't sure if this was exactly what you were asking.o the male child should have XY chromosomes and as cells split by mitosis, the daughter cells should have XY chromosomes only.So all the cells should have XY chromosomes in male. But in a picture showing 23 pair chromosomes in my science book, I found that only 23rd chromosomal pair of chromosomes had XY depiction.
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XYY Syndrome XYY Syndrome is a genetic condition that occurs when a male’s genes have an extra Y chromosome. Females typically have two X chromosomes (XX). Males typically have one X chromosome and one Y chromosome (XY).Males with this genetic condition have an extra copy of the Y chromosome in each of their cells (XYY).Most people have 46 chromosomes in each cell. Males with XYY syndrome have 47 because of the extra copy of the Y chromosome.However, sometimes this mutation is only present in some cells.ales with this genetic condition have an extra copy of the Y chromosome in each of their cells (XYY). Most people have 46 chromosomes in each cell. Males with XYY syndrome have 47 because of the extra copy of the Y chromosome.
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- (3) Males have 22 pairs of autosomes and 1 pair of sex chromosomes known as XY. (4) Males have 23 pairs of autosomes.2.Which pair of gametes can unite to produce a zygote that will develop into a normal human male embryo?
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Chromosome X chromosome the female sex chromosome, being carried by half the male gametes and all female gametes; female diploid cells have two X chromosomes. Y chromosome the male sex chromosome, being carried by half the male gametes and none of the female gametes; male diploid cells have an X and a Y chromosome.
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How Chromosomes Determine Sex Human cells contain 23 pairs of chromosomes for a total of 46. There are 22 pairs of autosomes and one pair of sex chromosomes. The sex chromosomes are the X chromosome and th … e Y chromosome. If you are male you have the XY chromosome.. making you a male. If you are female you have the XX chromosome..
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Meiosis and meiotic errors (Genetics) The human egg and sperm cells carry 23 chromosomes. These cells are  considered haploid cells containing half of the number of  chromosomes of other human cells.he sperm contains one copy of each of the 22 autosomal chromosomes and either one X or one Y chromosome. After fusion, these pair up to form a diploid cell, so that there are 46 chromosomes-two of each of the 22 autosomal chromosomes, and either two X chromosomes, or one X and one Y chromosome.
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How many chromosomes do humans have in each cell? Humans have 46 chromosomes in each cell. During fertilization of the egg, the sperm nucleus containing 23 chromosomes from the paternal side fuses with the nucleus of the egg that contains 23 chromosomes from the maternal side. The result is the zygote that contains 46 chromosomes (23 pairs of chromosomes; one of each pair from either parent). From that single celled zygote comes all the cells of your body today that is formed as a result of uncountable number of cell divisions.
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- Report Abuse. In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome. Source(s): http://ghr.nlm.nih.gov/handbook/basics/h...
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Y chromosome Full Definition of Y CHROMOSOME. : a sex chromosome that is characteristic of male cells in species in which the male typically has two unlike sex chromosomes — compare x chromosome. See Y chromosome defined for English-language learners. a sex chromosome that is characteristic of male cells in species in which the male typically has two unlike sex chromosomes — compare x chromosome.
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Y chromosome Definition of Y chromosome : a sex chromosome that is characteristic of male cells in species in which the male typically has two unlike sex chromosomes — compare x chromosome new!
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- Report Abuse. The normal human karyotypes contain 22 pairs of autosomal chromosomes and one pair of sex chromosomes. Normal karyotypes for women contain two X chromosomes and are denoted 46,XX; men have both an X and a Y chromosome denoted 46,XY.
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- Females have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.n humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
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- Y Chromosome ‘With about 60 million building blocks, the Y chromosome is the smallest of the 46 chromosomes in the human body.’ BBC News online ‘Most mutations occur in males. It's about a two-fold difference. One suggested reason is the larger number of cell divisions in the male germ line (sperm).’ Wellcome Trust
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- Sex chromosomes are labelled X or Y. Males normally have one copy of the X chromosome and one copy of the Y chromosome in each cell; it is the Y chromosome that determines maleness. Females, on the other hand, normally have two copies of the X chromosome but no Y chromosome.
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- If the zygote that wins the race to the egg has a Y chromosome in it's back pocket you have made a boy. The last part is right, but a zygote is a fertilized egg... Huma … n's have 46 chromosomes. The female egg (X) and the male sperm (X or Y) have 23 each so that when they meet they make 46. The sperm X or Y have to get to the egg.
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Girl with Y chromosome sheds light on maleness Girl with Y chromosome sheds light on maleness. A seven-year-old girl with a Y chromosome is providing new clues about a possible “master switch” of maleness. The girl has the normal chromosome count – 46 – and should be male. Other children who have the male sex chromosome but do not appear to be boys have been found to have gene mutations that temper the Y chromosome’s effects.
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X chromosome The X chromosome in humans spans more than 153 million base pairs (the building material of DNA). It represents about 2000 out of 20,000 - 25,000 genes. Each person usually has one pair of sex chromosomes in each cell. Females have two X chromosomes, whereas males have one X and one Y chromosome.
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The Genetics of Calico Cats Normal female mammals have two X chromosomes. Normal males have one X and one Y chromosome. This can be seen in this human male karyotype: The X and Y chromosomes appear at the bottom right corner of the image. If this were a female, the two sex chromosomes would both be relatively larger X chromosomes. As you can see, compared to the X chromosome, the Y chromosome is small and carries fewer genes. The exact genes carried on the X chromosome varies among species.
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- There are half as many chromosomes in gametes as in somatic or body cells. Since humans have 46 chromosomes in their body cells, male gametes have half as many, or 23 chromoso … mes.(Assuming you're asking about male humans).2 people found this useful.n a gamete (sex) cell, there are 23 chromosomes. A gamete is a haploid, or n, whereas a somatic (normal) cell is a diploid, or 2n, and has 46 chromosomes.
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X chromosome Each person usually has one pair of sex chromosomes in each cell. Females have two X chromosomes, whereas males have one X and one Y chromosome. Both males and females retain one of their mother's X chromosomes, and females retain their second X chromosome from their father.