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What metaphase does nondisjunction occur in Metaphase 1 or metaphase 2?
Wiki User
∙ 15y ago
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.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoYes crossing over can occur in metaphase 1 and metaphase 2
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Does diploid occur during metaphase 1?
Yes, ths chromosomes remain diploid in metaphase I.
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 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
In which stage do chromosomes independently assort?
Metaphase I during meiosis
What phase of meiosis do tetrads line up in the middle?
Metaphase 1
Does diploid occur during metaphase 1?
Yes, ths chromosomes remain diploid in metaphase I.
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.
Differences between metaphase 1 and metaphase 2?
1. In metaphase 1 spindle formation is completed In metaphase 2 spindle formation take place 2. Bivalent are involved in metaphase 1 Bivalents are not involved in metsphase 2
Bivalents align at metaphase plate?
Metaphase 1
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.
Homologous chromosomes pair and undergo crossing over during?
Paired homologous chromosomes are found at the spindle equator during metaphase. During metaphase the chromosomes line up on the plate and attach to the fully formed spindle.
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
In which stage do chromosomes independently assort?
Metaphase I during meiosis
Which stage of mitosis is the last phase that chromatids are together?
metaphase. C:
What phase of meiosis do tetrads line up in the middle?
Metaphase 1
Meiosis 1 us the same as what other reproductive process?
during metaphase 0_______0
What is the correct order for the sequence of meiosis?
Interphase Prophase 1 Metaphase 1 Anaphase 1 Telophase 1 Cytokinesis 1 Prophase 2 Metaphase 2 Anaphase 2 Telophase 2 Cytokinesis 2
