Question: Is an individual with the XXY combination of chromosomes a male or female?

Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a “female” chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.

What does it mean if you have XXY chromosome?

Females have two X sex chromosomes (XX). Males have an X and a Y sex chromosome (XY). Klinefelter syndrome can be caused by: One extra copy of the X chromosome in each cell (XXY), the most common cause. An extra X chromosome in some of the cells (mosaic Klinefelter syndrome), with fewer symptoms.

Can a person have XXY chromosomes?

XXY syndrome, also called Klinefelter syndrome, is a fairly common genetic condition. It happens when a boy is born with an extra sex chromosome in most or all of his cells.

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Can a girl have Klinefelter’s syndrome?

Klinefelter syndrome affects males only; females cannot have it. Klinefelter syndrome results from a genetic abnormality in which males have an extra copy of the X chromosome. Instead of the usual XY chromosomes, males with Klinefelter syndrome have an XXY pattern.

What is Geoff’s allele combination?

What is Geoff’s allele combination? … The tall allele is dominant and the dwarf allele is recessive.

Is Klinefelter syndrome only in males?

Klinefelter syndrome is a fairly common genetic condition found in males only. Many boys with Klinefelter syndrome — also known as XXY syndrome — have no signs or symptoms, and some don’t even know they have it until later in life.

Do males and females have the same amount of chromosomes?

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.

Is XXY a male or female?

Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a “female” chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.

What gender is an XYY chromosome?

XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys.

What chromosomes do females have?

Females have two X chromosomes, while males have one X and one Y chromosome. Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells. This phenomenon is called X-inactivation or lyonization.

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What is the female version of Klinefelter syndrome?

Turner Syndrome. Turner syndrome occurs in 1/2500 live births. It is caused by a partial or complete absence of one of the X chromosomes in a female.

What is male Turner syndrome?

If you’re a male, you are born with one X and one Y chromosome. Turner Syndrome occurs when one of the X chromosomes is missing, either partially or completely. Turner syndrome often causes short stature, typically noticeable by age 5.

How many chromosomes would be found in the karyotype of a Down Syndrome female who also suffered from Turner syndrome?

To diagnose Turner syndrome, doctors use a special blood test that looks at chromosomes, called a karyotype test (chromosomal analysis). Results that indicate TS show only one X chromosome instead of two X chromosomes, with a total of 45 chromosomes instead of the usual 46.

What leads to an individual having too many or two few chromosomes?

Each cell gets one copy of each chromosome. These cells go on to become eggs or sperm. If the chromosomes divide unevenly, an egg or sperm can end up with too many or too few chromosomes. If one of these participates in fertilization, then the embryo can end up with too many or too few chromosomes.

What process can lead to an individual having too many or two few chromosomes?

That one is chosen at random, through a process called meiosis. When meiosis messes up, you can end up with too many or too few chromosomes. One extra chromosome in an egg or sperm means three in the fertilized egg and so trisomy.

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