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What would be the result of an error in anaphase that failed to separate a pair of sister chromatids?
Wiki User
∙ 11y ago
dear person who wrote this........its a question about meiotic division, not your personal diray.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoIf the chromatids failed to seperate, the resulting gametes would have more or fewer chromosomes than normal (23).
Wiki User
∙ 11y agoOne cell would have an extra chromosome, and one cell would lack a chromosome.
Wiki User
∙ 14y agoNondisjunction
Wiki User
∙ 13y agoat the first ......
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Genetic disorders can result when chromatids fail to separate properly. During with phase is this problem most likely to occur?
In general, nondisjunction can occur in any form of cell division that involves ordered distribution of chromosomal material.There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during metaphase going into anaphase of mitosis.mitosis
When do the spindle fibers shorten?
Spindle fibers shorten during anaphase I and anaphase II in meiosis in order for both the separation of the homologous chromosomes and the sister chromatids to opposite poles before telophase I and II. After cytokinesis, the end result would be four daughter cells, otherwise known as the tetrad, being produced with half the number of chromosomes as compared to the parent cell. In mitosis, spindle fibers attached to the kinetochores of the chromosome shorten only during anaphase to separate the sister chromatids away from the centromere to opposite poles in preparation for cytokinesis where there would be a cleavage furrow deepening at the equator of the cell. The end result of mitosis are two daughter cells with identical number of chromosomes as the parent cell.
What phase of mitosis does the chromatids appear in the form of shortened rod-like structures?
Later in the Prophase the Chromatids become more clearly visible as a result of the chromosomes becoming shorter and thicker.
What is the correct term for 2 cells that result of mitosis?
These two newly formed Cells are called Daughter Cells.
Why do you use non-sister chromatids to demonstrate crossing over?
Crossing over occurs between homologous chromosomes, which are not identical, as one member of each pair of homologous chromosomes comes from the mother, and one member comes from the father. Sister chromatids are identical and crossing over would have no effect.
Genetic disorders can result when chromatids fail to separate properly. During with phase is this problem most likely to occur?
In general, nondisjunction can occur in any form of cell division that involves ordered distribution of chromosomal material.There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during metaphase going into anaphase of mitosis.mitosis
What is a example of anaphase?
An example of anaphase is the stage of cell division in which the sister chromatids separate and move towards opposite poles of the cell. This process is facilitated by the contraction of microtubules called spindle fibers. As a result of anaphase, each pole of the cell receives a complete set of chromosomes, ensuring that each daughter cell will have the correct number of chromosomes.
Does crossing over of non-sister chromatids result in generic variability?
Yes. It leads to exchange of genetic information between the chromosomes. Which in anaphase II would split in to separate single chromosomes that would be different than if crossing over didnt occur.
When do the spindle fibers shorten?
Spindle fibers shorten during anaphase I and anaphase II in meiosis in order for both the separation of the homologous chromosomes and the sister chromatids to opposite poles before telophase I and II. After cytokinesis, the end result would be four daughter cells, otherwise known as the tetrad, being produced with half the number of chromosomes as compared to the parent cell. In mitosis, spindle fibers attached to the kinetochores of the chromosome shorten only during anaphase to separate the sister chromatids away from the centromere to opposite poles in preparation for cytokinesis where there would be a cleavage furrow deepening at the equator of the cell. The end result of mitosis are two daughter cells with identical number of chromosomes as the parent cell.
Many chromosome mutations result when chromosomes fail to separate properly during what?
Meiosis, specifically during anaphase I and anaphase II. This is known as nondisjunction and it causes aneuploidy, such as trisomy 21
Occurs during prophase 1 of meiosis?
Mistakes such as nondisjunction can occur during meiosis. This is the result of chromosomes failing to separate equally during either anaphase.
Difference between sister chromatids and homologous chromosomes?
Homologous chromosomes are individual chromosomes inherited from each parent. Sister chromatids are the result of DNA replication, and the are identical.
What phase of mitosis does the chromatids appear in the form of shortened rod-like structures?
Later in the Prophase the Chromatids become more clearly visible as a result of the chromosomes becoming shorter and thicker.
What is the result when many chromosome mutations fail to separate properly?
If the chromosome mutations fail, then it is most likely to lead to a sign of cancer, since chromosome has failed to mutate properly.
What are nondisjunction genes?
Nondisjunction is the failure of homologous chromosomes or chromatids to segregate during mitosis or meisos with the result that one daughter cell has both of a pair of parental chromosomes or chromatids and the other has none. An example is Trisomy 21, which is also called Down's Syndrome. This person has 3 chromosome #21.Nondisjunction of genes occur during meiosis I when homologous chromosomes fail to separate or during meiosis II when there is unequal distribution of chromosomes. This leads to aneuploidy.
What is the correct term for 2 cells that result of mitosis?
These two newly formed Cells are called Daughter Cells.
What are the 4 steps of Mitosis and what is the end result of Mitosis?
The 4 steps are prophase,metaphase,anaphase, and telophase. The end result for mitosis is telophase, but if you are talking about the cell cycle it would be cytokinesis.
