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Small errors or errors in insignificant parts of the chromosome may lead to no problems, but as the errors increase in size/scope you start having problems. Errors may cause proteins to have problems, causing property changes (shape, charge areas), functional changes (no longer able to catylize reactions), or even become problematic for the cell (buildup of junk, pirons). That, as well as other changes to the chromosome, may trigger apoptosis (cell death), mark for destruction by white blood cell, proliferation (cancer), and other transformations.
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∙ 13y ago
Errors in chromosomes can result in genetic disorders, such as Down syndrome or cystic fibrosis. These errors can be caused by various factors, such as genetic mutations, environmental factors, or errors during cell division. Depending on the specific nature of the error, it can lead to a range of physical, cognitive, or developmental abnormalities in individuals.
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What organisms with three or more sets of chromosomes called?
Organisms with three or more sets of chromosomes are called polyploids. This can occur in plants and some animals, where multiple sets of chromosomes are present in each cell. Polyploidy can result from errors in cell division or hybridization between different species.
In Jacob syndrome did the nondisjunction occur in the mother or father?
Jacob syndrome, 49XYY, has to occur as a result of nondisjunction in the father. The Jacob Syndrome male would have received the X chromosome from his mother, and both Y chromosomes from the father (since the Y chromosomes can not possibly have come from the mother). Jacob Syndrome can be the result of nondisjunction in meiosis.
What would happen if homologous chromosomes did not pair in prophase 1?
If homologous chromosomes did not pair in prophase I of meiosis, it could result in improper segregation of chromosomes during meiosis, leading to aneuploidy in the daughter cells. This could result in genetic disorders or developmental abnormalities in offspring.
If a parent cell has 20 chromosomes how many chromosomes will be the result of meiosis?
Meiosis results in cells with half the number of chromosomes as the parent cell. Therefore, if a parent cell has 20 chromosomes, the result of meiosis will be cells with 10 chromosomes.
True or false reassortment of chromosomes can occur during meiosis by crossing over or by independent segregation of homologous chromosomes?
True. Reassortment of chromosomes can occur during meiosis through both crossing over (where chromatids exchange genetic material) and the independent segregation of homologous chromosomes (where chromosomes separate randomly into daughter cells).
What organisms with three or more sets of chromosomes called?
Organisms with three or more sets of chromosomes are called polyploids. This can occur in plants and some animals, where multiple sets of chromosomes are present in each cell. Polyploidy can result from errors in cell division or hybridization between different species.
When does duplication of chromosomes occur?
when does the duplication of chromosomes occur?
Does chiasmata occur in mitosis?
No, chiasmata do not occur in mitosis. Chiasmata are structures that form during meiosis, specifically during prophase I, as a result of crossing over between homologous chromosomes. Mitosis does not involve homologous chromosomes pairing up and exchanging genetic material like in meiosis.
Duplication of chromosomes occur in?
The replication of the chromosomes occurs during interphase.
What are sex chromosomes that result in male?
XY Chromosomes = Males XX Chromosomes = Females
What is a failure of homologous chromosomes to separate in meiosis?
A failure of homologous chromosomes to separate in meiosis is called nondisjunction. This can result in cells with an abnormal number of chromosomes, leading to genetic disorders such as Down syndrome. Nondisjunction can occur during either the first or second division of meiosis.
Why do karyotypes always show chromosomes at the point when cell division is about to occur?
They show chromosomes at the point when cell division is about to occur because the chromosomes are condensed and aligned which makes it easy to tell if there are the correct number and configurations of the chromosomes.
When do homologus chromosomes occur short answer please thankss?
Homologous chromosomes occur during meiosis. Meiosis reduces the chromosome number by half.
In Jacob syndrome did the nondisjunction occur in the mother or father?
Jacob syndrome, 49XYY, has to occur as a result of nondisjunction in the father. The Jacob Syndrome male would have received the X chromosome from his mother, and both Y chromosomes from the father (since the Y chromosomes can not possibly have come from the mother). Jacob Syndrome can be the result of nondisjunction in 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.
What would happen if homologous chromosomes did not pair in prophase 1?
If homologous chromosomes did not pair in prophase I of meiosis, it could result in improper segregation of chromosomes during meiosis, leading to aneuploidy in the daughter cells. This could result in genetic disorders or developmental abnormalities in offspring.
What causes of extra or missing chromosomes?
Extra chromosomes can be caused by errors in cell division, such as nondisjunction, which leads to the formation of trisomies. Missing chromosomes can result from errors in cell division or deletions of chromosome segments. Both scenarios can lead to genetic disorders like Down syndrome or Turner syndrome.
