Here are two examples that result in 'early fetal death' - Trisomy 13 and Trisomy 18. Meaning that when the normal [genetic] chromosomal complement is a chromosome pair, three copies of each chromosome are present and this is lethal.
Monosomy
yes my son is 3 months old and he has monosomy 21,they do say hes a miracle and not suppose to be here
The only monosomy that a human can have and still survive is Turner syndrome, which is characterized by having only one X chromosome (45,X). Individuals with Turner syndrome may have a range of symptoms, including short stature, infertility, and heart defects.
trisomy
A trisomy. A monosomy is when there is only one of a chromosome. A trisomy is when there are three of a chromosome. In Klinefelter's syndrome, there are three sex chromosomes.
Monosomy is a genetic condition characterized by the presence of only one copy of a particular chromosome instead of the normal two. This can lead to various developmental and health issues, depending on which chromosome is affected. A well-known example of monosomy is Turner syndrome, where there is a missing X chromosome in females. Monosomy can occur due to errors in cell division during meiosis or mitosis.
Turner Syndrome
Monosomy is a genetic condition characterized by the absence of one chromosome from a pair, resulting in an individual having a total of 45 chromosomes instead of the normal 46. This condition can lead to various developmental and health issues, depending on which chromosome is missing. A well-known example of monosomy is Turner syndrome, where there is a complete or partial absence of one X chromosome in females. Monosomy can arise from errors during cell division, particularly during meiosis.
ADHD (Attention-Deficit/Hyperactivity Disorder) is not classified as monosomy or trisomy, which are terms related to chromosomal abnormalities where an organism has either one fewer (monosomy) or one extra chromosome (trisomy) than the typical number. ADHD is a complex neurodevelopmental disorder influenced by a combination of genetic, environmental, and neurobiological factors. While genetic factors play a role in ADHD, it does not arise from a specific chromosomal abnormality like monosomy or trisomy.
A loss of a complete chromosome is called monosomy. This occurs when a cell only has one copy of a particular chromosome instead of the usual two copies.
monosomy. This term refers to the condition where an individual is missing one copy of a particular chromosome and only has one copy instead of the normal two.
If a person is missing a chromosome, it is known as monosomy. Monosomy occurs when there is only one copy of a particular chromosome instead of the usual two copies. For example, a person missing one copy of chromosome 21 would have a condition called monosomy 21 or trisomy 21, which is also known as Down syndrome.