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Failure of the chromatids to separate during anaphase onr or two of meiosis
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What is the failure of chromosome pairs to separate properly during meiosis?
Nondisjunction
If nondisjunction occurs during meiosis?
It is the failure of chromosome pairs to separate properly during cell division.
Propose how crossing-over during meiosis might affect the segregation of genes that are on the same chromosomes?
Segregation is the separating of genes into different cells during meiosis. We have found that there are many more genes that display segregation than there are chromosomes. The explaination is crossing-over - where during prophase I chromosome arms of homologous chromosomes break off and attach to each other. This allows genes on the same chromosome to segregate.
Recombination occurs during?
meiosis
How many daughter cell are produced when chromosomes undergo meiosis?
A total of four daughter cells are created during meiosis. There are two phases of meiosis, meiosis 1 and meiosis 2. During meiosis 1 two daughter cells are created while during meiosis 2 four daughter cells are created.
Homologous chromosomes segregate towards opposite poles of a dividing cell during which stage?
meiosis I
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.
When a child has Trisomy when does the mutation occur?
during meiosis
What is the failure of chromosome pairs to separate properly during meiosis?
Nondisjunction
If a child is born with down syndrome when did the mutation occur?
During meiosis
If nondisjunction occurs during meiosis?
It is the failure of chromosome pairs to separate properly during cell division.
What is a failure of homologous chromosomes to separate in meiosis?
Nondisjunction
Propose how crossing-over during meiosis might affect the segregation of genes that are on the same chromosomes?
Segregation is the separating of genes into different cells during meiosis. We have found that there are many more genes that display segregation than there are chromosomes. The explaination is crossing-over - where during prophase I chromosome arms of homologous chromosomes break off and attach to each other. This allows genes on the same chromosome to segregate.
Recombination occurs during?
meiosis
Why are there two sets of phases during meiosis but only one during meiosis?
burr
How many daughter cell are produced when chromosomes undergo meiosis?
A total of four daughter cells are created during meiosis. There are two phases of meiosis, meiosis 1 and meiosis 2. During meiosis 1 two daughter cells are created while during meiosis 2 four daughter cells are created.
When are four haploid cells formed?
in meiosis, or after the cell has split two times
