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What process takes place when a chromosome pair fails to separate correctly during meiosis?
Wiki User
∙ 11y ago
When chromosome pairs fail to separate aneuploidy occurs due to non-disjunction. This can result in monosomy or trisomy of the chromosome. These are mistakes made in chromosome segregation during meiosis. If pairs of homologous chromosomes fail to separate during the first meiotic division or if the centromere joining sister chromatids fails to separate during the second meiotic division, gametes, and hence offspring, will be produced that have too many and too few chromosomes.
If this occurs in a cell of the body that is undergoing mitosis, the body will destroy the cell. If it occurs in a gametic cell (ovum or sperm) then the result can be trisomy, which is when the offspring receives three of the same chromosome rather than the normal two. Often the embryo will abort itself if this occurs but if you end up with three copies of chromosome 21 this is known as Down syndrome. One the creation of a cell with trisomy, another cell results that is missing the chromsome so it is possible to end up with gametes missing a chromosome aswell, which will usuallr cause the embryo to abort, or may lead to serious defects in the offspring
The tetrads (pairs of homologous chomosomes) split up during Anaphase I in Meiosis I.
Wiki User
∙ 14y ago
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When chromosomes separate what is the process called?
This process is called meiosis.
If a cell that undergoes meiosis later is four cells with chromosome numbers 17 17 18 and 16 what happened?
one of the sister chromatids in one of the two cells that was produced during the first division of meiosis did not separate during the second division resulting in one cell with an extra chromosome and one with a missing chromosome. This process is known as nondisjunction
Does. The chromosome number change in meiosis?
No it doesnt change. The chromosomes will stay at the same number unless there is a mutation through the process of meiosis.
Change in chromosome number in mitosis and meiosis?
Meiosis results in a change in chromosome number indicated by division of cells into two identical cells. This is a process that is used for purposes of reproduction.
Which process occurs when chromosomes do no separate during meiosis?
nondijunction
What process separates chromosome?
Mitosis and Meiosis
When chromosomes separate what is the process called?
This process is called meiosis.
If a cell that undergoes meiosis later is four cells with chromosome numbers 17 17 18 and 16 what happened?
one of the sister chromatids in one of the two cells that was produced during the first division of meiosis did not separate during the second division resulting in one cell with an extra chromosome and one with a missing chromosome. This process is known as nondisjunction
Does. The chromosome number change in meiosis?
No it doesnt change. The chromosomes will stay at the same number unless there is a mutation through the process of meiosis.
Change in chromosome number in mitosis and meiosis?
Meiosis results in a change in chromosome number indicated by division of cells into two identical cells. This is a process that is used for purposes of reproduction.
Which process occurs when chromosomes do no separate during meiosis?
nondijunction
Both meiosis and fertilization are essential to maintain chromosome number constant .why?
Total number of chromosomes remain same in same species of organism through meiosis process. In meiosis process the number of chromosomes are reduced to half as a result in gametes only one set of chromosomes will be present. In this process chromosomes are same.....
Which process that follows meiosis ensures that the chromosome number of an organism is maintained from one generation to the next?
Mitosis
What are the two cells called that the parent cell split into?
In animal cells (meiosis) the parent (which is a diploid cell with homologous pairs of chromosomes) seperates into two daughter cells containing the replicated pairs of sister chromatids. The process of meiosis is begun again (meiosis II) from which the sister chromatids separate into individual chromosomes. Then, the two diploid cells separate into 4 haploid daughter cells containing 1 chromosome. This is a generalized answer without the steps of meiosis described.
Chromosome pairs what and are distributed to sex cells?
Chromosome pairs undergo a process called meiosis during which they are divided. One of the pairs, known as the sex chromosomes, determines the sex of an individual. In humans, females have two X chromosomes, while males have one X and one Y chromosome. These sex chromosomes are distributed randomly to sex cells during meiosis, resulting in the formation of eggs (in females) and sperm (in males) with varying combinations of sex chromosomes.
The chromosome number is reduced from diploid to haploid during what?
meiosis I is reduction, meiosis II is division.
what process reduces the chromosome number of a cell by half?
Well, meiosis splits a cell into two daughter half-cells.
