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Some common mistakes that can occur during meiosis include nondisjunction, where homologous chromosomes fail to separate properly, leading to an incorrect number of chromosomes in the resulting cells. Crossing over may also lead to errors if it occurs at the wrong locations along the chromosomes. Additionally, errors in chromosome structure or genetic material may result in mutations or genetic disorders in the offspring.
During meiosis 2 in anaphase 2 when the chromosome are being pulled to opposite ends of the cells well they could get pulled to the same end and once the cells (there are two in meiosis 2) enter telophase 2 where the two cells split and become four cells, one of the four cells could get an extra chromosome and this results in downs syndrome.
During mitosis the two copies of the chromosomes separate and each cell gets an identical copy of the genes. The two copies are held together by a centromere (made of proteins), sometimes the two copies do not separate from this point. This is called "non-disjunction" and the result is that both copies get pulled to the end of one cell and the other cell is missing that chromosome.
The negative consequences when meiosis goes wrong are:
*It may result in extreme abnormalities.
*Because of nondisjunction,it may lead to the following;
*Down syndrome-which are caused of the trisonomy of chromosome21.
*PATAU SYNDROME-caused by the trisonomy of chromosome 13 .
by JOSEPH KENNEDY OCARIZA-CANTABACO
FROM LNHS General Santos City
study hard,behave well......
nondisjunction, trisomy 21, klinefelter, poly x females, jacob's syndrome, turner syndrome, karyotype, amniocentesis, CVS, deletion, william's syndrome, cri du chat, inversion, translocation, alagille syndrome
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Occurs during prophase 1 of meiosis?
Crossing over between homologous chromosomes occurs during prophase 1 of meiosis. This process involves the exchange of genetic material between homologous chromosomes, leading to genetic diversity among the offspring.
When do homologus chromosomes occur short answer please thankss?
Homologous chromosomes occur during meiosis. Meiosis reduces the chromosome number by half.
If child is born with trisomy when did the mutation occur?
during meiosis
When a child has Trisomy when does the mutation occur?
during meiosis
Can mistakes in meiosis ever be beneficial?
Yes, mistakes in meiosis can lead to genetic variability, which can be beneficial for populations in changing environments. This genetic variability can provide the raw material for evolution and adaptation to occur. However, the majority of mistakes in meiosis are harmful and can result in genetic disorders.
If a child is born with down syndrome when did the mutation occur?
During meiosis
How can mistakes occur during meiosis?
Mistakes such as nondisjunction can occur during meiosis. This is the result of chromosomes failing to separate equally during either anaphase. Therefore each resulting cell will not get an equal number of chromosomes. This can result in diseases such as down syndrome (Trisomy 21, where there are 3 copies of the 21st chromosome present instead of the normal 2), or gender complications such as Klinefelter's (XXY) or Turner's (XO) syndromes.
When does replication occur during meiosis?
Interphase
Occurs during prophase 1 of meiosis?
Crossing over between homologous chromosomes occurs during prophase 1 of meiosis. This process involves the exchange of genetic material between homologous chromosomes, leading to genetic diversity among the offspring.
Which does not occur during meiosis?
DNA replication does not occur during meiosis. Meiosis is a specialized cell division process that involves two rounds of division to produce gametes with half the number of chromosomes as the parent cell. DNA replication happens during the interphase preceding meiosis.
When do homologus chromosomes occur short answer please thankss?
Homologous chromosomes occur during meiosis. Meiosis reduces the chromosome number by half.
During meiosis how many replications occur?
DNA replicates once during meiosis. This is why the end result is four haploid cells.
If child is born with trisomy when did the mutation occur?
during meiosis
What events occur in telophase?
Telophase occur in both mitosis and meiosis. During telophase nuclear membrane and nuclei reforms and in meiosis it further goes for meiosis 2 which is same as mitosis
What major events occur in telophase?
Telophase occur in both mitosis and meiosis. During telophase nuclear membrane and nuclei reforms and in meiosis it further goes for meiosis 2 which is same as mitosis
When a child is born chromosomal mutation when did the mutation occur?
During meiosis
When a child is born with a chromosomal mutation when did mutation occur?
during meiosis
