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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.
crossing over.
Meiosis Stage II.
Segregation distortion, non-mendelian segregation.
Plato = B tetrad synapsis
meiosis
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.
Tetrad
synapsis
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.
crossing over.
the stage is called the "first division"
Meiosis Stage II.
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.
The pairing of homologous chromosomes during prophase 1 is called crossing over. The chromosomes make a copy of themselves. The 4 cells can now twist together and exchange pieces.
They are called homologous chromosomes (but can also be referred to as homologues or homologs).
Chromosomes that have the same sequence of genes are called homologous chromosomes.