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What does the 23Rd chromosome represent?
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.
What is having only one of each chromosome in the cell called?
Having a single copy of each chromosome is called the haploid condition eg in egg and sperm cells.Having pairs of chromosomes is called the diploidcondition eg in all other body cells (except red blood cells which do not have chromosomes).
A somatic cell having two of each type of chromosome has chromosome number?
A somatic cell with two of each type of chromosome has a diploid chromosome number. This means that the cell has a complete set of chromosomes, one from each parent.
Is Klinefelter Syndrome sex-linked or autosomal?
Klinefelter Syndrome is sex-linked, because it is a genetic defect that results in a male having an extra X chromosome.
A gene located on the X or Y chromosome is a?
Genes located on the X or Y chromosome are referred to as sex-linked genes. This is because the inheritance of these genes is dependent upon the sex of the individual. For example, only males can inherit genes located on the Y chromosome (because males have XY and females have XX).
What does an individual with an extra copy of chromosome 21 demonstrait traits of having?
down syndrome
What is it called when an individual has three copies of a chromosome?
The presence of three copies of a chromosome is known as a trisomy. An example would be Trisomy 21, also known as Down Syndrome.
What is a sat chromosome?
A sat chromosome, short for satellite chromosome, is a chromosome with a secondary constriction that contains highly repetitive DNA sequences called satellite DNA. These regions appear as small, secondary appendages on the chromosome and play a role in chromosome structure and organization.
Is Down syndrome a single gene or polygenic trait?
Down syndrome is a result of having an extra chromosome in one's genes. Chromosome thirteen* if your that much into the science. It is also called trisomy 21 because the chromosome 21 is the one with the abnormalities. *Abnormalities with chromosome thirteen is called Patau syndrome or trisomy 13.
Down syndrome is a result of polyploidy?
Down syndrome is caused by an extra copy of chromosome 21, which is called trisomy 21. This condition occurs during cell division in either the egg or sperm, resulting in an individual having three copies of chromosome 21 instead of the usual two. This is not the result of polyploidy, which involves having multiple sets of all chromosomes.
What is sat chromosome?
they are chromosomes having secondary contriction.. aka satellite chromosome
The amelogenin gene can be used to determine?
The amelogenin gene can be used to determine the sex of an individual. It has two forms, one found on the X chromosome and one on the Y chromosome. By comparing the length of these forms through a technique like PCR, researchers can identify whether an individual is male (having both X and Y forms) or female (having two copies of the X form).
What does the 23Rd chromosome represent?
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.
Down syndrome is usually caused by an extra copy of what chromosome?
Down syndrome occurs because of the extra chromosome on chromosome 21. If you go onto google images and type in karyotype of Down syndrome, you will find a picture of the extra chromosome. Instead of having two chromosomes on chromosome 21, there is an extra. Type your answer here...
What is X chromosome?
The x chromosome is one of the sex chromosomes, the other being the y chromosome. In mammals there are two of the sex chromosomes in each organism. Females generally contain two x chromosomes, and males contain one x chromosome and one y chromosome.
Is Down syndrome a genetic disorder or a chromosome disorder?
Down syndrome is a chromosomal disorder. It is caused by having 1 extra chromosome (chromosome 21).
What is a congenital disorder caused by having an extra 21st chromosome which results in a flat face short stature and mental retardation?
The congenital disorder caused by having an extra 21st chromosome is called Down syndrome. It is characterized by physical features such as a flat face, short stature, and intellectual disabilities.
