0
Nondisjunction is the disappointment of homologous chromosomes to detach accurately during meiosis. This outcomes in the creation of gametes containing a more noteworthy or lesser chromosomal sum than typical ones. Therefore the individual might create a trisomal or monosomal condition.
hassane ouldbaba
Wiki User
∙ 12y agoNondisjunction causes chromosomal disorders because sometimes an error in meiosis occurs when homologous chromosomes fail to separate which results in the organism receiving the wrong number of chromosomes thus having a chromosomal disorder.
Add your answer:
Earn +20 pts
What are structural and numerical mutations?
structural mutation have four types of change in the chromosomal structure: TRANSLOCATION, INVERSION, DELETION AND DUPLICATION.while:numerical mutation results from nondisjunction, or the failure of a pair of homologous choromosomes or a pair of sister chromatids to separate during meiosis or mitosis. The effect of nondisjunction during mitosis is not harmful as the effect of nondisjunction during meiosis.
What are some chromosomal disorders?
The most common type of chromosomal disorder is the Down syndrome caused by an added copy of chromosomes 21. More common chromosomal disorders are Klinefelter's syndrome and Turnerâ??s syndrome.
Is Turner syndrome a chromosomal error?
Yes, it is a chromosomal error which occured most likely during meiosis. It is an error in cell division called NONDISJUNCTION. The single X chromsome is maternal, which suggests that the meiotic error tends to be paternal (3/4 of cases) -Krista D. RN
What effects does nondisjunction have on the body if it occurs during mitosis What problems can an individual have if they have nondisjunction in somatic cells?
Autosomal nondisjunction is the most prolific cause of trisomy 21, or down syndrome, a defect that usually occurs during meiosis 1, but can occur during 2 as well.
How can nondisjunction in meiosis result in a diploid gamete?
If all of the chromosomes fail to separate in meiosis, then nondisjunction can result in a diploid gamete. This is a type of chromosomal mutation. In animals, a zygote produced from the union of a mutated diploid gamete and a normal haploid gamete will have triploidy, which is lethal. In plants, this is not necessarily lethal.
What is the cause of chromosomal?
Chromosomal disorders are caused by abnormalities in the chromosomes.
What is the causes of chromosomal disorder?
Chromosomal disorders are caused by abnormalities in the chromosomes.
What is a chromosomal disorder that could result from nondisjunction?
Disorders, such as Down's Syndrome, are caused by nondisjunction.
What are structural and numerical mutations?
structural mutation have four types of change in the chromosomal structure: TRANSLOCATION, INVERSION, DELETION AND DUPLICATION.while:numerical mutation results from nondisjunction, or the failure of a pair of homologous choromosomes or a pair of sister chromatids to separate during meiosis or mitosis. The effect of nondisjunction during mitosis is not harmful as the effect of nondisjunction during meiosis.
What is the cause of xyy syndrome and genetics?
Nondisjunction in Meiosis 2
Mental retardation caused by what disorders is often apparent from infancy?
If retardation is caused by chromosomal or other genetic disorders, it is often apparent from infancy.
What causes disorders sush as klinefelter syndrome and turner syndrome?
non disjunction of sex chromosomes
What are some chromosomal disorders?
The most common type of chromosomal disorder is the Down syndrome caused by an added copy of chromosomes 21. More common chromosomal disorders are Klinefelter's syndrome and Turnerâ??s syndrome.
How does nondisjunction cause Trisomy 21?
it can cause Trisomy 21 because an extra chromosome can be added.
The failure of replicated chromosomes to separate is called?
The failure of replicated chromosomes to separate is called nondisjunction. This will cause extra or missing chromosomes in the daughter cells.
Is Turner syndrome a chromosomal error?
Yes, it is a chromosomal error which occured most likely during meiosis. It is an error in cell division called NONDISJUNCTION. The single X chromsome is maternal, which suggests that the meiotic error tends to be paternal (3/4 of cases) -Krista D. RN
What is nondisjunction and why is it harmful?
Nondisjunction is the failure of a homolog to separate during meiosis causing trisomy (an extra chromosome) or monosomy (a missing chromosome), it can be harmful because it is a mutation that can cause many devastating disease, for example nondisjunction of the 21st chromosome causes down syndrome, another example of nondisjunction being harmful, is nondisjunction of the sex chromosomes, causing Turner's or Klinefelter's syndrome two very devastating diseases.
