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Does diploid occur during metaphase 1?
Yes, ths chromosomes remain diploid in metaphase I.
Does DNA replication occur in interphase?
It occurs in metaphase.
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
When does crossing over occur im meiosis?
it takes place in the metaphase
What represents the phases of mitosis in the order they occur?
prophase, metaphase, anaphase, telophase
Does alignment of tetrads at metaphase plate occur in mitosis?
Yes, alignment of tetrads at the metaphase plate occurs in meiosis, specifically during meiosis I when homologous chromosomes pair up as tetrads. In mitosis, individual chromosomes align at the metaphase plate.
In what part of the cell does the replication occur?
DNA replication occurs during Interphase. This is not normally part of the cell division cycle but interphase must occur before subsequent stages such as prophase and metaphase can occur.
What order does the mitosis stage occur in?
ProphaseMetaphaseAnaphaseTelophaseSometimes, people will include a fifth event, called prometaphse, where the nuclear envelope disappears and the spindles form. Generally, this phase is classified with prophase.
How does metaphase 1 differ from metaphase of mitosis?
In metaphase I of meiosis, homologous chromosomes align at the cell's equator in pairs, while in metaphase of mitosis individual chromosomes align. Additionally, in meiosis I, genetic recombination and crossing over can occur between homologous chromosomes, increasing genetic diversity.
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.
What is is the difference between metaphase 1 and 2?
Metaphase 1 The chromosomes line up on the equatorial (metaphase) plate. Metaphase 2 Kinetochores of the paired chromatids.
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.
