What happens to chromosomes in metaphase 1?
The chromosomes move themselves to and align in the equator of the cell.
During what phase do the chromosomes move to the center of the cell aligned on the spindle apparatus?
metaphase 1 occurs only in mitosis. the metaphase 2 is in meiosis. in metaphase 1, spindle fibers align the homologous chromosomes along the equator so that two chromosomes are on one side, and the other two are on the other side whereas in metaphase 2 spindle fibers align them along the equator so that all four chromosomes get cut in half.
How does the alignment of chromosomes differ at the equator between metaphase of mitosis and metaphase of meiosis 1?
In mitosis metaphase the mitotic spindel attaches to one side of a pair of chromosomes and seperates them so that one chromosome ends up on each side. In metaphase 1 of meiosis, the mitotic spindel only attaches to one pair of chromosomes from one side, so that when anaphase occures that pair of chromosomes will end up on one side. overall - mitosis metaphase- chromosomes split - meiosis metaphase 1- chromosome pair stay together and…
How are chromosomes in a cell at metaphase of mitosis similar to and different from the chromosomes in a cell at metaphase of meiosis 2?
During metaphase in mitosis, the duplicated chromosomes line up along the metaphase plate (middle of the cell). Humans have 46 chromosomes. So during metaphase, our duplicated 46 chromosomes would line up along the metaphase plate. Eventually, two daughter cells each with 46 chromosomes will be created. There are 2 metaphases in meiosis. During Metaphase I, the homologous chromosomes line up on the metaphase plate. So in humans there would be 23 pairs of duplicated chromsomes…
How does the number of chromosomes in metaphase of mitosis compare to the number of duplicated chromosomes in metaphase 2 of meiosis?
What is the fundamental difference between the positions of the chromosomes at metaphase stage of mitosis and metaphase 1 of meiosis?
List the following events in the correct sequence and describe what happens during each event anaphase metaphase prophase?
In Metaphase, the chromatids are still connected making chromosomes which are aligning in the center of the cell with the spindle fibers preparing to sepearte during Anaphase. In Anaphase, the chromosomes separate in half forming chromatids, which are then again referred to as chromosomes. So basically the chromosomes in Metaphase are preparing to divide, and the chromosomes in Anaphase are dividing/divided. There are double the amount of chromosomes in Anaphase than in Metaphase.
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…