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unit 4 crossword

QuestionAnswer
ordered series of events involving cell growth and cell division that produces two new daughter cells cell cycle
stage of mitosis during which the nuclear membrane breaks down and mitotic spindle fibers attach to kinetochores prometaphase
(also, karyokinesis) period of the cell cycle during which the duplicated chromosomes are separated into identical nuclei; includes prophase, prometaphase, metaphase, anaphase, and telophase mitosis
stage of mitosis during which sister chromatids are separated from each other anaphase
(also, first gap) first phase of interphase centered on cell growth during mitosis G1 phase
apparatus composed of microtubules that orchestrates the movement of chromosomes during mitosis mitotic spindle
distinct from the G1 phase of interphase; a cell in G0 is not preparing to divide G0 phase
period of the cell cycle leading up to mitosis; includes G1, S, and G2 phases (the interim period between two consecutive cell divisions interphase
mutated version of a normal gene involved in the positive regulation of the cell cycle oncogene
stage of mitosis during which chromosomes condense and the mitotic spindle begins to form prophase
chromosomes of the same morphology with genes in the same location; diploid organisms have pairs of homologous chromosomes (homologs), with each homolog derived from a different parent homologous chromosomes
division of the cytoplasm following mitosis that forms two daughter cells. cytokinesis
second, or synthesis, stage of interphase during which DNA replication occurs S phase
region at which sister chromatids are bound together; a constricted area in condensed chromosomes centromere
stage of mitosis during which chromosomes are aligned at the metaphase plate metaphase
stage of mitosis during which chromosomes arrive at opposite poles, decondense, and are surrounded by a new nuclear envelope telophase
prokaryotic cell division process binary fision
cell, nucleus, or organism containing two sets of chromosomes (2n) diploid
single DNA molecule of two strands of duplicated DNA and associated proteins held together at the centromere chromatid
cell, nucleus, or organism containing one set of chromosomes (n) haploid
haploid reproductive cell or sex cell (sperm, pollen grain, or egg) gamete
(also, second gap) third phase of interphase during which the cell undergoes final preparations for mitosis G2 phase
total genetic information of a cell or organism genome
nuclear division that produces daughter nuclei each having one-half as many chromosome sets as the parental nucleus reduction division
haploid cell that can produce a haploid multicellular organism or can fuse with another spore to form a diploid cell spore
(singular, chiasma) the structure that forms at the crossover points after genetic material is exchanged chiasmata
second round of meiotic cell division following meiosis I; sister chromatids are separated into individual chromosomes, and the result is four unique haploid cells meiosis 2
specialized cell line that produces gametes, such as eggs or sperm germ cells
life-cycle type in which the diploid and haploid stages alternate alternation of generations
exchange of genetic material between non-sister chromatids resulting in chromosomes that incorporate in chromosomes that incorporate genes from both parents of the organism crossover
all the cells of a multicellular organism except the gametes or reproductive cells somatic cell
the sequence of events in the development of an organism and the production of cells that produce offspring life cycle
first round of meiotic cell division; referred to as reduction division because the ploidy level is reduced from diploid to haploid meiosis 1
union of two haploid cells from two individual organisms fertilization
formation of a close association between homologous chromosomes during prophase I synapsis
two duplicated homologous chromosomes (four chromatids) bound together by chiasmata during prophase I tetrad
Created by: mortehay000
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