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The 23rd chromosome is the sex chromosome. It is either an X or Y (strictly male) chromosome. When the sperm and egg cells fuse, they combine into 46 chromosomes with either two X chromosomes or an XY pairing. If it is 2 X chromosomes, the zygote is a female. If it is an XY pairing, the zygote is a male.
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What determines the 22ND pair of chromosome?
The 22nd pair of chromosomes is determined by the combination of one chromosome from each parent during fertilization. Each parent contributes one chromosome to determine the genetic makeup of the 22nd pair.
N humans what is chromosome pair 23 called?
sex chromosomes
What are sex chromosomes in a human male?
We call these sex chromosomes. Whether you are a male or female depends on the presence or absence of certain chromosomes. The sex chromosomes are the X chromosome and the Y chromosome. If you have two XX, you will show female characteristics and If you have XY you will show male characteristics.
The 23rd pair of chromosomes that differ in males and females are?
During the process of meiosis that sex cells undergo, the chromosome set is halved from 46 to 23 chromosomes. This way, the combined chromosome sets of two sex cells after fertilization result in a full set again.
What are the X and Y chromosomes?
Everybody has 23 pairs of chromosomes, half they get from their mother and half from their father. The 23rd chromosome you have contains the information of what sex you are. If you are a girl you will have a X chromosome from your mother and and X chromosome from you father. If you are a boy it means you will have a X chromosome from your mother and a Y chromosome from your father. When a sperm cell fertilises an egg the sperm will either be carrying the X chromosome from the male or a Y. If the sperm is carrying a X it will pair with the X chromosome from the mother making the baby a girl. If the sperm is carrying a Y chromosome it will pair with the X chromosome from the mother making the baby a boy! This means it is all down to the father whether the baby is a boy or a girl.
How is gender inheritance?
Gender is inherited from your parent's 23rd chromosome. The (XX) chromosome pair is for a female and the (XY) chromosome pair is for a male. You get a (X) chromosome from your mother because she has two (x)'s. Her 23rd chromosome is (XX). It's your father's chromosome that determines what gender you are. His 23rd chromosomes were (XY). If you get an (X) from him, you become a girl. If you get a (Y) chromosome from him, you become a boy. This all happens when your mother's egg is fertilized.
Is it true or false that the 23rd chromosome pair determines the gender of a child?
TRUE.
Why is the 23rd pair of chromosomes not always homologous?
The 23rd pair of chromosomes are the sex chromosomes. In female humans, both sex chromosomes are homologous, and characterized as XX. In male humans, one sex chromosome is an X chromosome and the other is a much smaller, nonhomologous Y chromosome, and is characterized as XY.
What is the sex determiner?
Sex is determined by the 23rd pair of chromosomes (in humans). You get an X chromosome from your mother and an X or Y chromosome from your father. If you are XX, you are female. If you are XY, you are male.
What is the diploid number of an organism represent?
number of chromosome
Which chromosome contains sex linked genes?
Both X and Y chromosomes i.e. Allosome 23rd pair contains sex linked genes.
What chromosomes make up the 23rd set of chromosomes in a human male?
Both have an x chromosome. Girls are XX and boys are XYIn Human being Y- chromosome is a determinig factor for maleness.http://wiki.answers.com/Is_a_x_chromosome_a_girl_or_boy_baby#ixzz18JCTmFoU
Do chromosome map percentages represent actual chromosome distances?
No, chromosome map percentages do not represent actual physical distances on a chromosome. They are a measure of the frequency of recombination events between genetic markers on a chromosome, which can be used to infer the relative genetic distance between these markers. The percentages are not directly proportional to physical distances due to factors like genetic interference.
What determines the sex of the human?
The genes that are carried in the sperm to the ova. If the 23rd chromosome of the sperm is 'X', the offspring will be female. If it is 'Y', the offspring will be male.
What is the chromosomal difference between girls and boys?
The 23rd chromosome in human DNA is called the sex chromosome, and it determines the gender of the baby. A chromosome of XX is unique to girls, and XY is for boys. http://www.genome.gov/10001772 This link is to the National Human Genome Research Institute, for more in-depth information.
What determines the 22ND pair of chromosome?
The 22nd pair of chromosomes is determined by the combination of one chromosome from each parent during fertilization. Each parent contributes one chromosome to determine the genetic makeup of the 22nd pair.
N humans what is chromosome pair 23 called?
sex chromosomes
