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| Mitosis & cytoplasmic division function in __ A. Asexual reproduction of a single-called eukaryotes B. Growth & tissue repair in multicelled species C. Gamete formation bacteria & arches D. Sexual reproduction in plants and animals E. Both a & b | E. Both a and b
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| A duplicated chromosome has __ chromatid. A. One B. Two C. Three D. Four | B. Two
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| Homologous chromosomes ____ A. Carry the same genes B. Are the same shape C. Are the same length D. All of the above | D. All of the above
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| Most cells spend the majority of their lives in ____ A. Prophase B. Metaphase C. Anaphase D. Telophase E. Interphase F. D and e | E. Interphase
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| The spindle attaches to chromosomes at the ___ A. Centriole B. Contractile ring C. Centromere D. Centrosome | C. Centromere
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| Only___ is not a stage of mitosis A. Prophase B. Metaphase C. Interphase D. Anaphase | C. Interphase
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| In intervals of interphase, G stands for _____. A. Gap B. Growth C. Gey D. Gene | B. Growth
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| Interphase is the part of the cell cycle when ____. A. A cell ceases to function B. A cell forms itâs spindle apparatus C. A cell grows and duplicates its DNA D. Mitosis proceeds | C. A cell grows and duplicates its DNA
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| After mitosis, the chromosomes number of a descendant cell is ____ the parent cellâs. A. The same as B. One half of C. Rearranged compared to D. Doubled compared to | A. The same as
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| A plant cell divides by the process of ___ A. Telekinesis B. Nuclear division C. Fission D. Cytokinesis | D. Cytokinesis
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| BRCA1 and BRCA2 ___ A. Are checkpoint genes B. Are proto-oncogenes C. Encode tumor suppressor D. All of the above | D. All of the above
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| ___ are characteristics of cancer. A. Malignant cells B. Neoplasms C. Tumors | A. Malignant cells
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| Lump of cells | Tumor
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| Made of microfilaments | Contractile ring
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| Divides plants cell | Cell plate
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| Organize the spindle | Centrosomes
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| Caused by metastatic cells | Cancer
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| Made of microtubles | Spindle
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| Indention | Clevage furrow
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| Shortens with age | Telomere
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| Sister chromatids move apart | Anaphase
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| Chromosomes start to condense | Prophase
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| New nuclei form | Telophase
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| All duplicated chromosomes are aligned at the spindle equator | Metaphase
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| DNA replication | Interphase
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| Cytoplasmic division | Cytokinesis
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| Different forms of a gene | Alleles
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| Useful for varied offspring | Males
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| May be none between meiosis 1 and meiosis 2 | Interphase
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| Chromosomes lined up | Metaphase 1
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| Haploid | Gametes
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| Form at fertilization | Zygotes
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| Mash up time | Prophase
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| The main evolutionary advantage of sexual over asexual reproduction is that it produces _____ A. More offspring per individual B. More variation among offspring C. Healthier offspring | B. More variation among offspring
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| Meiosis is a necessary part of sexual reproduction because it ___. A. Divides two nuclei into four new nuclei B. Reduces the chromosomes number for gametes C. Produces clones that can cross over | B. Reduces the chromosomes number for gametes
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| Meiosis ____. A. Occurs in all eukaryotes B. Supports growth and tissue repair in multi-celled species C. Gives rise to genetic diversity among offspring D. Is part of the life cycle of all cells | C. Gives rise to genetic diversity among offspring
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| Sexual reproduction in animals requires ____ A. Meiosis B. Fertilization C. Germ cells D. All of the above | D. All of the above
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| Meiosis ___ the parental chromosomes number A. Doubles B. Halves C. Maintains D. Mixes up | B. Halves
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| Dogs have a diploid chromosome number of 78. How many chromosomes do their gametes have? A. 39 B. 78 C. 156 D. 234 | A. 39
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| The cell pictured to the right is in which stage of nuclear division A. Anaphase B. Anaphase 1 C. Anaphase 2 D. None of the above | C. Anaphase 2
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| Crossing over mixes up _____. A. Chromosomes B. Alleles C. Zygotes D. Gametes | B. Alleles
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| Crossing over happens during which phase of meiosis? A. Prophase 1 B. Prophase 2 C. Anaphase 1 D. Anaphase 2 | A. Prophase 1
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| ____ contributes to variation in traits among the offspring of sexual reproduces. A. Crossing over B. Random attachment of chromosomes to spindle poles C. Fertilization D. Both a and b E. All are factors | E. All are factors
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| Which of the following is one of the very important differs between mitosis and meiosis? A. Chromosomes align midway between spindle poles only in meiosis. B. Homologous chromosomes pair up only in meiosis C. DNA is replicated only in mitosis D. Sister | B. Homologous chromosomes pair up only in meiosis
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