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Why do you think that relatively few fetuses with chromosomal trisomy survive to birth?
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What are the major chromosomal changes in trisomy?
Trisomy is defined as the presence of three homologous chromosomes. For example, Down's Syndrome is caused by trisomy-21, 3 copies of chromosome 21.
What is the most common chromosomal abnormality in humans?
Trisomy 21, Down's syndrome
Is kleinfelters syndrome recessive?
Kleinfelters is a chromosomal "trisomy" of the sex chromosomes. It is not inherited in a recessive or dominant manner.
What is a common autosomal trisomy?
Something tells me that trisomy 21 is not really the most common, but it is the common among babies that actually live. Other trisomies common among live births are those of the 13th and 18th chromosome. Trisomy 16 is the most common known disorder of miscarried fetuses. Trisomy is caused by nondisjunction of a pair of chromosomes during meiosis or mitosis. What causes nondisjunction? If we could figure that out, we might be able put trisomies in the past.
What is Trisomy?
A trisomy is a condition in which a person has three copies of a chromosome instead of the usual two copies. Trisomy 9 refers to three copies of chromosome 9. A person can have full trisomy 9 (three copies in every cell) or mosaic trisomy 9 (three copies in some cells but not all).
What type of condition is trisomy?
Trisomy an abnormality in chromosomal development.
What type of chromosomal abnormality is most likely to be viable in humans?
Trisomy
What are the major chromosomal changes in trisomy?
Trisomy is defined as the presence of three homologous chromosomes. For example, Down's Syndrome is caused by trisomy-21, 3 copies of chromosome 21.
What is the medical term of trisomy 16?
It is called Patau syndrome and is a chromosomal abnormality
What is the most common chromosomal abnormality in humans?
Trisomy 21, Down's syndrome
Why isn't there trisomy 5 or 17 in human population?
They are lethal chromosomal mutations.
Is kleinfelters syndrome recessive?
Kleinfelters is a chromosomal "trisomy" of the sex chromosomes. It is not inherited in a recessive or dominant manner.
What is the different autochromosomal abnormalities?
Common autosomal chromosomal abnormalities include Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), Patau syndrome (trisomy 13), and Turner syndrome (monosomy X). These abnormalities result from errors in chromosome number, leading to characteristic physical and developmental features. Diagnosis is often made through genetic testing such as karyotyping or chromosomal microarray analysis.
What are alternative names for Patau syndrome?
Patau's Syndrome Trisomy 13 Syndrome Trisomy D Syndrome Trisomie 13 Trisomee Trisome Trisomic Chromosomal Abnormalities, Chromosome Anomalies, Disorder Fetal Aneuploidy
What gene is affected in Down Syndrome?
It is the result of a chromosomal abnormality, in which there is an extra chromsome on the chromosome 21 pair. This is call trisomy 21.
Can Down syndrome be prevented?
Downs Syndrome, also known as trisomy 21, is a chromosomal disorder and, as such, cannot be avoided nor prevented.
What are examples of diseases caused by chromosomal mutation?
Down's Syndrome Kleinfelter's Syndrome
