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How many bivalents are present during metaphase 1 of meoisis in Drosophila where 2n10?
In Drosophila, which has a diploid chromosome number of 2n = 10, there are five pairs of homologous chromosomes. During metaphase I of meiosis, these homologous pairs align at the metaphase plate as bivalents. Therefore, there are five bivalents present during metaphase I in Drosophila with a diploid number of 10.
During what phase of meiosis do replicated homologous chromosomes line up next to each other at the cell's equator-?
It is during the anaphase of meiosis that the replicated homologous chromosomes line up next to each other at the cell's equator.
What metaphase does nondisjunction occur in Metaphase 1 or metaphase 2?
Non-disjunction is the failure of a pair of chromosomes or chromatids to separate. Since this happens in both metaphase I and II, non-disjunction can occur in either stage.In metaphase I it is the failure of the two homologous chromosomes in the pair to separate. In this case all of the gametes will be affected.In metaphase II it is the failure of the two sister chromatids to separate. In this case only half of the gametes are affected.Non-disjunction is the cause of a number of genetic conditions eg Down syndrome, Triple-X syndrome.See http://en.wikipedia.org/wiki/Nondisjunction
What is the activity of chromosomes in metaphase 1 of meiosis?
In Mitosis during Metaphase, the chromosomes line up on the metaphase plate, but without their homologues. In Meiosis during Metaphase I, the tetrads line up on the metaphase plate. Then it's back to double-stranded chromosomes lining up in Metaphase II. I
How many chromosomes attach to each spindle fiber during metaphase 1?
Two chromosomes attach to each spindle fiber during metaphase I of meiosis.
How many bivalents are present during metaphase 1 of meoisis in Drosophila where 2n10?
In Drosophila, which has a diploid chromosome number of 2n = 10, there are five pairs of homologous chromosomes. During metaphase I of meiosis, these homologous pairs align at the metaphase plate as bivalents. Therefore, there are five bivalents present during metaphase I in Drosophila with a diploid number of 10.
How many ways can a diploid organism line up in metaphase 1 ofmeosis if it has five chromosomes?
5!
Do homologous chromosomes pair up during metaphase 2 as they do in metaphase 1?
No, homologous chromosomes do not pair up during metaphase 2 as they do in metaphase 1. In metaphase 2, individual chromosomes line up along the metaphase plate.
During what phase of meiosis do replicated homologous chromosomes line up next to each other at the cell's equator-?
It is during the anaphase of meiosis that the replicated homologous chromosomes line up next to each other at the cell's equator.
What metaphase does nondisjunction occur in Metaphase 1 or metaphase 2?
Non-disjunction is the failure of a pair of chromosomes or chromatids to separate. Since this happens in both metaphase I and II, non-disjunction can occur in either stage.In metaphase I it is the failure of the two homologous chromosomes in the pair to separate. In this case all of the gametes will be affected.In metaphase II it is the failure of the two sister chromatids to separate. In this case only half of the gametes are affected.Non-disjunction is the cause of a number of genetic conditions eg Down syndrome, Triple-X syndrome.See http://en.wikipedia.org/wiki/Nondisjunction
Which letter represent metaphase 1?
The letter "D" represents metaphase 1 in meiosis. During metaphase 1, homologous chromosome pairs line up at the cell's equator.
When does independent assortment occur in meiosis?
Independent assortment occurs in meiosis during metaphase I when homologous chromosomes align randomly at the metaphase plate. This allows for different combinations of alleles to be present in the gametes produced.
What is the activity of chromosomes in metaphase 1 of meiosis?
In Mitosis during Metaphase, the chromosomes line up on the metaphase plate, but without their homologues. In Meiosis during Metaphase I, the tetrads line up on the metaphase plate. Then it's back to double-stranded chromosomes lining up in Metaphase II. I
How many chromosomes attach to each spindle fiber during metaphase 1?
Two chromosomes attach to each spindle fiber during metaphase I of meiosis.
How long does the lining up of chromosomes during metaphase 1 of meiosis differ from the way they line up during metaphase of mitosis?
3 weeks
What is the product of meosis 1?
The product of meiosis I is two haploid cells, each containing half the number of chromosomes as the original diploid cell. These cells are genetically distinct due to the processes of crossing over and independent assortment that occur during prophase I and metaphase I. Meiosis I separates homologous chromosomes, resulting in the reduction of chromosome number while increasing genetic diversity.
Homologous chromosomes pair and undergo crossing over during?
prophase I of meiosis. This process involves the exchange of genetic material between non-sister chromatids, resulting in genetic variation among gametes.
