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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.
What happens during synapsas in meiosis?
The purpose of synapsis in meiosis is to increase genetic variability. It does this as the homolog pairs match up, which means there are 4 chromosomes of like, but possibly unique, DNA data in the grouping. This allows the cell. as it proceeds through Anaphase 1 and Anaphase 2 to separate the individual chromosomes first into 2 pairs then as individuals, which inturn adds to the variability as 1 chromosome goes to each daughter cell. .
What stage of of meiosis do homologous pairs separate?
Reduction Division
What two factors introduce genetic variation during the process of meiosis?
The two factors that introduce genetic variation during the process of meiosis are independent assortment and chromosomal crossover. These occur during prophase 1 and anaphase 1 of meiosis.
In mitosis how many times is the DNA copied?
In both mitosis and meiosis DNA replication only occurs once, during Interphase and Interphase 1, for mitosis and meiosis, respectively.
Recombination occurs during?
meiosis
During what event of meiosis will chiasmata be observed?
during the pachytene stage of prophase-1 of meiosis -1 of meiosis ,the X shaped structure chiasmata is observed
Segregation of alleles occurs during?
Segregation.
What Meiosis occurs in .?
meiosis occurs in the overies and the testies.....there is 2 stage of meiosis...meiosis 1 and meiosis
Crossing over occurs during which phase of meiosis?
Crossing over occurs during Prophase I of meiosis.
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.
When does independent assortment occur in meiosis?
Independent assortment occurs during metaphase I
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 happens in meiosis 1 that does not occurs in meiosis 2?
DNA is copied (for novanet cheaters)
WHEN DO Chromosomes decondense into diffuse chromatin?
At the beginning of Prophase 1 during meiosis. It occurs in a sub-stage of Prophase 1 called Leptonema.
Does crossing over occur in meiosis?
yes crossing-over occurs in meiosis also known as genetic drifting
How is the chromosome number reduced between meiosis 1 and meiosis 2?
In spermatogenesis, the cell first replicates from 46 to 92, then divides in meiosis 1 to 46-46 then again in Meiosis 2 to form 23-23-23-23 which are 4 daughter spermatids. In oogenesis the cell replicates from 46 to 92, then divides in meiosis 1 to 46-46 then again in Meiosis 2 to form 23-23-23-23 which are 1 egg and 3 polar bodies
