0
Nondisjunction occurs when homologous chromosomes do not seperate.
-Amber ^-^
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Nondisjunction occurs when?
homologous chromosomes fail to separate during meiosis
If nondisjunction occurs during meiosis?
It is the failure of chromosome pairs to separate properly during cell division.
What homologous pairs of chromosomes line up in the middle of the spindle during meiosis name the phase one or two?
During Metaphase 1 the homologous pairs of chromosomes line up at the center of the cell. They arrange around the spindle during meiosis.
What stage in meiosis do homologous chromosomes come together?
During meiosis, the homologous chromosomes come together during prophase I. Pairs of homologous chromosomes align during a process called synapsis and form a tetrad (four sister chromatids, two from each pair of homologous chromosomes). During synapsis, crossing over may occur, during which homologous chromosomes exchange genetic material.
What is it called when homologous chromosomes trade alleles?
Crossing-over is when segments of homologous chromosomes switch places. This process occurs during prophase I of meiosis and results in recombinant chromosomes. This adds to the variation seen in offspring.
Nondisjunction occurs when?
homologous chromosomes fail to separate during meiosis
What are Homologous chromosomes that occurs in meiosis but not mitosis is called?
Tetrad
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
How does disjunction occurs?
Nondisjuction occurs when the homologous chromosomes fail to separate.
What action occurs during meiosis exchanging pieces of chromosomes between homologous chromosomes?
crossing over
If nondisjunction occurs during meiosis?
It is the failure of chromosome pairs to separate properly during cell division.
Which process occurs when chromosomes do no separate during meiosis?
nondijunction
What homologous pairs of chromosomes line up in the middle of the spindle during meiosis name the phase one or two?
During Metaphase 1 the homologous pairs of chromosomes line up at the center of the cell. They arrange around the spindle during meiosis.
What is the difference between prophase mitosis and prophase meiosis?
In prophase I of meiosis, crossing over of homologous chromosomes occurs. This does not happen in prophase of mitosis.
What does a nondisjunction involve?
it occurs when the chromosomes during meiosis do not separate correctly and then it results in a gamete or egg cell too have too few or too many chromosomes. This can lead to different diseases.
What stage in meiosis do homologous chromosomes come together?
During meiosis, the homologous chromosomes come together during prophase I. Pairs of homologous chromosomes align during a process called synapsis and form a tetrad (four sister chromatids, two from each pair of homologous chromosomes). During synapsis, crossing over may occur, during which homologous chromosomes exchange genetic material.
What is it called when homologous chromosomes trade alleles?
Crossing-over is when segments of homologous chromosomes switch places. This process occurs during prophase I of meiosis and results in recombinant chromosomes. This adds to the variation seen in offspring.
