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Cell Reproduction
Mitosis and meiosis
22
Biology
9th Grade
06/16/2015

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Cards

Term
Asexual Reproduction
Definition
genetically identical offspring
Term
Sexual Reproduction
Definition
2 parents contribute genetic info to create a unique offspring
Term
Mitosis
Definition
Division of somatic cells (diploid)
Term
Prophase
Definition
chromatin condense to form double armed chromosomes attached at centromere, nuclear envelope breaks down, centrioles/spindle fibers form
Term
Metaphase
Definition
chromosomes line up across middle of cell, spindle fibers connect to each centromere
Term
Anaphase
Definition
Fibers pull apart chromatids into single armed chromosomes and move towards poles of cell
Term
Telophase
Definition
chromosomes -> chromatin, nuclear envelope reforms around chromosomes
Term
Cytokinesis
Definition
splits cytoplasm in half, thus splitting cell in two (animal – cleavage furrow, plant – cell plate forms)
Term
Meiosis
Definition
Creation of gametes (haploid)
Term
Interphase I
Definition
duplicate chromosomes (haploid -> diploid)
Term
Prophase I
Definition
chromatic -> chromosomes, homologous pairs come together to form tetrads, point where the 2 chromosomes overlapped – crossing over point
Term
Metaphase I
Definition
tetrads line up in the center of cell, fibers attach to centromere
Term
Anaphase I
Definition
fiber pulls apart tetrads -> double armed chromosomes
Term
Telophase I
Definition
nuclear envelope reforms, fiber breaks down, chromatin recondenses
Term
Cytokinesis I
Definition
2 daughter cells created -> HAPLOID cells
Term
Prophase II
Definition
centrioles/spindle fibers form
Term
Metaphase II
Definition
sister chromatids line up across middle of cell, spindle fibers connect to each centromere
Term
Anaphase II
Definition
Fibers pull apart chromatids into single armed chromosomes and move towards poles of cell
Term
Telophase II
Definition
chromosomes -> chromatin, nuclear envelope reforms around chromosomes
Term
Cytokinesis II
Definition
splits cytoplasm in half, thus creating FOUR different cells, all HAPLOID
Term
Fertilization
Definition
Fusion of sperm and egg cell to create zygote
Term
Similarities between Mitosis and Meiosis
Definition

does DNA replication, division, same basic cycle (metaphase, anaphase, telophase, cytokinesis) 

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