Cell Cycle (Meiosis) Flashcards
Also called reduction division
Meiosis
What type of cells undergo meiosis
Sex cells / gametes
Does meiosis produce diploid or haploid cells?
4 haploid cells
What are the stages of meiosis
Interphase
Meiosis I
Meiosis II
What are the stages of meiosis I
Prophase I
Metaphase I
Anaphase I
Telophase I
What happens under prophase I
Nuclear envelope breaks down
Chromosomes condense
Synapsis begins
Crossing over of chromosomes happens
What are the stages of prophase I
Leptonema
Zygonema
Pachynema
Diplonema
Diakinesis
What stage of prophase I does the condensing of chromosomes occur?
Leptonema
What stage of Prophase I do synapsis occur
Zygonema
What stage of Prophase I does generic recombination occur?
Pachynema
What stage of Prophase I does the synaptonemal complex dissolve and homologues start to separate alittle
Diplonema
What stage of Prophase I does the nuclear envelope dissolve
Diakinesis
Chromosomes with similar size, shape, length, and genetic content
Homologous chromosomes
The pairing of homologous chromosomes
Synapsis
What is the point of crossing over?
Chiasma / chiasmata
What happens during metaphase I?
The alignment of homologous chromosomes at the metaphase plate
What happens in anaphase I
Homologous chromosomes split and travel to opposite poles of the cell
Reappearance of the nuclear membrane around the new set of newly split homologous chromosomes
Telophase I
What is the purpose of meiosis Ii
To divide sister chromatids and form 4 haploid cells
Meiosis that resembles mitotic division
Meiosis II
Stages of meiosis II
Prophase II
Metaphase II
Anaphase II
Telophase II
What happens in Prophase II
Chromosomes condense
New spindle fibers are formed
What happens in Metaphase II
Alignment of sister chromatids at the metaphase plate
What happens in anaphase II
Separation of sister chromatids
