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Meiosis
- prophase I
- chromosomes condense
- homologous chromosomes synapse
- nuclear envelope breaks down
- mitotic spindle forms
- metaphase I
- homologous pairs of
chromosomes line up on the
metaphase plate
- anaphase I
- the two chromosomes (each w/ two
chromatids) of each homologous pair
separate and move toward opposite poloes
- telophase I
- chromosomes arrive at spindle poles
- prophase II
- chromosomes condense
- spindle forms
- nuclear envelope disintegrates
- metaphase II
- individual chromosomes line
up on the metaphase plate
- anaphase II
- sister chromatids separate and move as
individual chromosomes toward the spindle
poles
- telophase II
- chromosomes arrive at the spindle poles
- spindle breaks down
- nuclear envelope re-forms
- chromosomes arrive at the spindle poles
- sister chromatids separate and move as
individual chromosomes toward the spindle
poles
- individual chromosomes line
up on the metaphase plate
- chromosomes condense
- chromosomes arrive at spindle poles
- the two chromosomes (each w/ two
chromatids) of each homologous pair
separate and move toward opposite poloes
- homologous pairs of
chromosomes line up on the
metaphase plate
- chromosomes condense
- How do the daughter cells compare genetically to the parent cell?
- chromosome number is reduced by half
- haploid cells produced are genetically different from one
another and from the parent cell
- genetic differences result from
- crossing over
- random separation of
homologous chromosomes
- crossing over
- genetic differences result from
- chromosome number is reduced by half
Anexos de mídia
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