Chromosomes are long pieces of DNA found in the center (nucleus) of cells. DNA is the material that holds genes. It is considered the building block of the human body.
InformationChromosomes come in pairs. Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes). Half come from the mother; the other half come from the father.
Two of the chromosomes (the X and the Y chromosome) determine if you are born a boy or a girl (your gender). They are called sex chromosomes:
The mother always contributes an X chromosome to the child. The father may contribute an X or a Y. Therefore, it is the father that determines the gender of the child.
The remaining chromosomes are called autosomal chromosomes. They are known as chromosome pairs 1 through 22.
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For detailed information, see heredity and disease(genetics).
Chromosomes are long pieces of DNA found in the center (nucleus) of cells. DNA is the material that holds genes. It is considered the building block of the human body.
InformationChromosomes come in pairs. Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes). Half come from the mother; the other half come from the father.
Two of the chromosomes (the X and the Y chromosome) determine if you are born a boy or a girl (your gender). They are called sex chromosomes:
The mother always contributes an X chromosome to the child. The father may contribute an X or a Y. Therefore, it is the chromosome from the father that determines the gender of the child.
The remaining chromosomes are called autosomal chromosomes. They are known as chromosome pairs 1 through 22.
See also:
Review Date: 02/17/2011
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
There is no 'deletion chromosome'. You mean chromosome deletion, and it is a phenomenon where a chromosome disappears from cell's genetic layout.
chromosome 17 The correct answer is chromosome 15
Chromosome does not have an antonym.
A metacentric chromosome is one in which the centromere is located in the center of the chromosome.
No. An allele is the tip of a chromosome.
An x chromosome is specifically a feminine chromosome. With a x and y chromosome its male, with a x and x, it is a female.
chromosome 1 chromosome 1
There is no 'deletion chromosome'. You mean chromosome deletion, and it is a phenomenon where a chromosome disappears from cell's genetic layout.
chromosome 17 The correct answer is chromosome 15
Chromosome does not have an antonym.
No. An 'X' chromosome looks like an 'X'. The 'Y' chromosome looks like a deformed 'X'. It is noticeably different to an 'X' chromosome. Also, the 'Y' chromosome is only a third of the size of an 'X' chromosome - an 'X' chromosome is 155 million base pares, while the 'Y' chromosome is only 58 million base pairs.
chromosome.
A metacentric chromosome is one in which the centromere is located in the center of the chromosome.
in Patau there is an extra chromosome in chromosome 13, in Edwars it the extra chromosome is in chromosome 18
The gene that causes cystic fibrosis is located on chromosome 7, which is an autosome, not a sex chromosome.
Smallest to largest: Gene (a place on a chromosome); chromosome (there are 46 in human cells); and DNA (because it accounts for all the genetic material in a cell).
There are two sex chromosomes: the X chromosome and the Y chromosome. During fertilization, the mother always gives an X chromosome and the father gives either another X chromosome or a Y chromosome. Therefore, all humans have at least one X chromosome.