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Ch7 Study Stack

Meiosis

TermDefinition
Meiosis A form of cell division that halves the number of c.chromosomes when forming specialized reproductive cells
Gametes Reproductive cells
In meiosis there are ______ divisions 2
What is replicated just prior to Prophase I? The cells DNA
During Prophase I the homologous chromosomes come together in s process called ____________. Synapsis
The process called synapsis creates a ________. Tetrad
A tetrad includes ____ chromosomes---the original two homologous chromosomes and their sister chromatids. 4
Crossing-over When portions of a chromatid on one homologous chromosome are broken and exchanged with the corresponding chromatid portion of the other homologous chromosome.
Metapahse I The tetrads line up at the equator of the cell
Anaphase I The homologous chromosomes are separated and pulled to opposite poles of the cell
During Anaphase I the sister chromatids ____ _____ separate Do not
Independent Assortment The random separation of homologous chromosomes during Anaphase I
The two cells formed at the end of Telophase I are now ____________, because the homologous chromosomes are now separated, but they are still attached to their sister chromatids Haploid
During _________________the sister chromatids are separated meiosis II
The _______ is NOT replicated prior to Meiosis II DNA
Meiosis creates ______ haploid daughter cells. Four
Spermatogensis The formation of sperm cells
How many sperm cell are created in spermatogenesis 4
oogenesis The formation of an egg
How many egg cells are produced in oogenesis 1
Asexual reproduction One parent organism and produce genetic clones of parent
Sexual reproduction Two parent organisms and create genetically different offspring
Sexual reproduction creates variation
Parthenogenesis A process where a female can fertilize her own egg when a male is not present
List three types of asexual reproduction binary fission, fragmentation, budding
Created by: rimpastato
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