Chapter 14 Flashcards
2 identical strands of DNA which form a chromosome after DNA replication
Chromatids
Colored bodies
Rod shaped structures of DNA present in the cell during cell division
Chromosomes
Means colored material
Term for uncoiled DNA in the nucleus when the cell is undergoing its normal activity
Chromatin
The period of time (Resting Period) between nuclear divisions
Interphase
Subdivided the cytoplasm
Cytokinesis
Reproduces the nucleus
Mitosis
Number of chromosomes found in eggs or sperm
Haploid
The process by which cells reproduce
Mitosis and cytokinesis
Having 2 haploid sets of homologous chromosomes
Diploid
Chromosomes identical in size, shape, and possess the same genes
Humans have 23 pairs
Homologous chromosomes
Chromosomes condense from chromatin and the nuclear membrane disappears
Prophase
Chromosomes line up along the cells equator
Metaphase
Sister chromatids on each chromosome separate, and begin to move towards the poles of the cells
Anaphase
Chromosomes reach the poles of the cell, begin to unwind, and then assume the form of chromatin
Telophase
Division of the cytoplasm is not part of mitosis
Cytokinesis
Chromosomes take the form of chromatin and replicate to produce the 2 chromatids
Interphase
Chromatin condenses to for chromosomes.
Homologous chromosomes form pairs with synapsis
Prophase 1
The homologous chromosomes pair along the equatorial plane of the cell so each homologous is on the opposite side of the plane
Metaphase 1
Homologous chromosomes separate and are drawn to the opposite poles of the cell
Anaphase 1
Homologous chromosomes reach the opposite pole of the cell and cytokinesis occurs
Telophase 1
Consists of prophase, metaphase, anaphase, and telophase
And also the separation of the 2 chromatids of each chromosome
4 haploid cells containing 23 chromosomes
Meiosis 2
Cell growth, organelle replication, and protein synthesis
G1 phase
Protein synthesis and production of cellular products
G2 phase
DNA replication
S phase
46 double chromosomes in:
Prophase
Metaphase
Prophase I
Metaphase I
2 groups of 46 single chromosomes
Anaphase
Telophase
2 groups of 23 double chromosomes
Anaphase I
Telophase I
Prophase II
Metaphase II
2 groups of 23 single
Anaphase II
Telophase II
4 haploid daughter cells meiosis is complete
Have 23 chromosomes
Gametes