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Synapsis is the process in which the genetic material is exchanged between two homologous non sister chromatids (the pair of chromosomes which are same in shape,size but not identical) whereas chaisma is the actual site where synapsis occur.
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What is the site of crossing over between two non-sister chromatids?
Chiasma - The microscopically visible site where crossing over has occurred between chromatids of homologous chromosomes during prophase I of meiosis.
What is the structure formed by the crossing over of the optic nerves?
Optic Chiasma
What does the term chiasma refer?
A structure that holds together homologues during crossing over
What is the difference between prophase I and prophase II of meiosis?
Prophase 1 vs Prophase 2 of meiosisDURING PROPHASE I:Crossing over happens in chromosomes where genetic information is swapped from chromosome to another at a chiasma (chiasmata for multiple crossing over sections)Cell is Diploid 46 chromosomesDURING PROPHASE II:No Crossing over at this point, as it has already happened during prophase I.Cell is Haploid 23 chromosomes
What is the difference between the gametes produced without corssing over and the ones produced with crossing over?
Gametes produced by crossing over are called non parental and possess more genetic variations as compared to those produced with out crossing over which possess much less genetic variations.
What is the site of crossing over between two non-sister chromatids?
Chiasma - The microscopically visible site where crossing over has occurred between chromatids of homologous chromosomes during prophase I of meiosis.
What is the structure formed by the crossing over of the optic nerves?
Optic Chiasma
What does the term chiasma refer?
A structure that holds together homologues during crossing over
What is the difference between prophase 1 and 2?
DURING PROPHASE I:Crossing over happens in chromosomes where genetic information is swapped from chromosome to another at a chiasma (chiasmata for multiple crossing over sections)Cell is Diploid 46 chromosomesDURING PROPHASE II:No Crossing over at this point, as it has already happened during prophase I.Cell is Haploid 23 chromosomesRead more: What_is_the_difference_between_prophase_I_and_prophase_II_of_meiosis
What is mitotic chiasma?
chiasma occurs in meiosis. Fascinating that I didn't answer this question but it's attributed to me so I guess I'll add some detail. Chiasma means crossing/intersecting and are the points where recombination occurs duting meoisis. (Crossing over does not occur in mitosis). Chiasma(singular) or chiasmata (plural) are formed during prophaseof meiosis I duing recombination and hold homologous chromosomes together at the sites where the exchanges of genetic material occur. These "connections: remain in place until until the chromosomes seperate during anaphase.
What is the difference between prophase I and prophase II of meiosis?
Prophase 1 vs Prophase 2 of meiosisDURING PROPHASE I:Crossing over happens in chromosomes where genetic information is swapped from chromosome to another at a chiasma (chiasmata for multiple crossing over sections)Cell is Diploid 46 chromosomesDURING PROPHASE II:No Crossing over at this point, as it has already happened during prophase I.Cell is Haploid 23 chromosomes
Crossing over occurs in?
Each chromatid can synapse with any one it want/chooses.
What is the difference between the gametes produced without corssing over and the ones produced with crossing over?
Gametes produced by crossing over are called non parental and possess more genetic variations as compared to those produced with out crossing over which possess much less genetic variations.
Gene maps are based on?
the frequencies of crossing over between genes
What is the exchange of genes between homologous pairs of chromosomes?
homologous chromosomes exchange alleles during crossing over.
What is the difference between synapsis and crossing over?
-- synapsis: homologous chromosomes are coming close together and bivalents are formed.-- crossing-over: non-sister chromatids of homologous chromosomes interchange genesThe pairing (formation of bivalents) allows crossing over to take place and this enables genetic variations in the gametes.
What is the exchange of a corresponding segment between homologous chromosomes?
It would appear you are speaking of crossing over which takes place in Prophase I of meiosis.
