Cell Division BIO
Terms in this set (27)
the fourth stage of mitosis, in which the chromatids of each chromosome have separated and the daughter chromosomes are moving to the poles of the cell
the disease caused by an uncontrolled division of abnormal cells in a part of the body
an ordered sequence of events in the life of a cell, from its origin in the division of a parent cell until its own division into two. in the eukaryotic cell, the _______ is composed of interphase and M phase
the process by which a less specialized cell becomes a more specialized cell type
the reproduction of cells
structures in the centrosome of animal cells composed of a cylinder pf microtubule triplets arranged in a 9 + 0 pattern. A centrosome has a pair of __________.
a cellular structure consisting of one DNA molecule and associated protein molecules. A eukaryotic type typically has multiple, linear ________, which are located in the nucleus. A prokaryotic cell often has a single, circular ________, which is found in the nucleoid.
the reciprocal exchange of genetic material between nonsister chromatids during prophase 1 of meiosis
the division of the cytoplasm to form two separate daughter cells immediately after mitosis, meiosis 1, or meiosis 2
the process by which a cell or group of cells becomes specialized in structure and function
a cell containing two sets of chromosomes (2N), one set inherited from each parent
the process by which a DNA molecule is copied: also called DNA synthesis
the union of haploid gametes to produce a diploid zygote
a haploid reproductive cell, such as an egg or sperm. These unite during sexual reproduction to produce a diploid zygote.
a cell containing only one set of chromosomes (N)
a pair of chromosomes of the same length, centromere position, and staining pattern that possess genes for the same characters at corresponding loci. One _______________ is inherited from the father, the other from the mother. Also called homologs, or homologous pair
the principle stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together
the period in the cell cycle when the cell is not dividing. During _______, cellular metabolic activity is high, chromosomes and organelles are duplicated, and cell size may increase. _________ also accounts for about 90% of the cell cycle.
a modified type of cell division in sexually reproducing organisms consisting of two rounds of cell division but only one round of DNA replication. It results in cells with half the number of chromosome sets as the original cell
third stage of mitosis, in which the spindle is complete and the chromosomes, attached to microtubules at their kinetochores, are all aligned at the metaphase plate
a process of nuclear division in eukaryotic cells conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase, and telophase. ______ conserves chromosome number by allocating replicated chromosomes equally to each of the daughter nuclei.
the first stage of mitosis, in which the chromatin condenses into discrete chromosomes visible with a light microscope, the mitotic spindle begin to form, and the nucleolus disappears but the nucleus remains intact
a chromosome responsible for determining the sex of an individual
any cell in a multicellular organism except a sperm or egg or their precursors
cells in multicellular organisms modified to carry out a particular function, such as transporting a certain substance or executing a specific task
the pairing and physical connection of duplicated homologous chromosomes during prophase 1 of meiosis
the fifth and final stage of mitosis, in which daughter nuclei are forming and cytokinesis has typically begun
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