What Causes XYY Syndrome?

XYY syndrome is a rare genetic disorder that affects only males. The symptoms of this chromosomal birth defect are very few. Most men with XYY syndrome live a normal life with normal sexual development and fertility. Some men with this condition develop certain signs and symptoms which include:
- Learning disability
- Speech problems
- Delayed motor skill development
- Taller than average height
- Behavioral problems
- Lower IQ
- Weaker muscle
With early diagnosis and proper treatment, men with this condition can live a normal successful life.
Causes of XYY syndrome
Let's discuss below what causes XYY syndrome.
A normal human being has 46 chromosomes in each cell which are divided into 23 pairs. These 46 chromosomes include one X and one Y chromosomes, also known as the sex chromosomes. The sex chromosomes determine the female and male sex characteristics. Women have two X chromosomes whereas are men have one X and one Y chromosome. However, men born with XYY syndrome have one X and two Y chromosomes.
XYY syndrome is not hereditary. Chances of having children with XYY syndrome are more or less the same for men without XYY syndrome as it for those with XYY syndrome. This condition is caused due to the error in cell division. The improper segregation of chromosomes or nondisjunction during anaphase II of sperm formation can result in an extra copy of the Y chromosome. This cell-division error can happen prior to conception in either the mothers or father's reproductive cells.
In some rare cases, the XYY syndrome can occur due to the nondisjunction after conception. This happens in the early embryonic development stages. Such male infants may be born with a mosaic of cells of which some have 46 chromosomes and other 47 chromosomes. The exact cause behind this nondisjunction, both before and after conception is still not known.
How is Drinking Alcohol Related to Male Fertility?
Know MoreWhat Causes Leukocytospermia?
Know MoreWhat Causes Chronic Prostatitis?
Know MoreWhat Causes Klinefelter Syndrome?
Know MoreCan Erectile Dysfunction Lead to Infertility?
Know MoreIs Reduced Libido in Men a Sign of Infertility?
Know MoreCan Yeast Infection Affect Semen and what are The Symptoms of Yeast Infection in Semen?
Know MoreWhat are the Symptoms of Aspermia?
Know MoreWhat is Aspermia?
Know MoreCan Smoking in Men Cause Infertility?
Know MoreWhat is Retrograde Ejaculation?
Know MoreWhat are the Causes of Pain or Swelling in Testicles? Can It Lead to Infertility?
Know MoreWhat causes chocolate cysts?
Know MoreWhat are the Causes of Endometriosis?
Know MoreWhat are the Causes of Foamy Urine in Men?
Know MoreWhat are the Causes of Hypospadias?
Know MoreWhat Causes Male Chlamydia?
Know MoreWhat are the Causes of Male Hypogonadism?
Know MoreWhat Causes Hypersermia in Men?
Know MoreWhat Causes High Estrogen Levels in Men?
Know MoreWhat Causes Peyronie's Disease?
Know MoreDo Spermatoceles Cause Infertility?
Know MoreWhat Causes Testicular Atrophy in Men?
Know MoreWhat are the Causes of Varicocele?
Know MoreWhat are the Causes of Orchitis?
Know MoreWhat are the Causes of Teratospermia?
Know MoreWhat are the Causes of Hypospermia?
Know MoreWhat are the Causes of Asthenozoospermia?
Know MoreWhat are the Causes of Aspermia?
Know MoreWhat Causes Premature Ejaculation?
Know MoreWhat are the causes of male infertility?
Know More