Well guys let have an test Questions 1. A human cell has 46 total or 23 pairs of chromosomes. Following mitosis, the daughter cells would each have a total of ____ chromosomes. After meiosis I, the two daughter cells would have ____ chromosomes, and after meiosis II ____ chromosomes. A. 46, 46, 46 B. 46, 23, 23 C. 23, 23, 23 D. 46, 12, 12 E. 23, 12, 12 2. Which of the following is unique to mitosis and not a part of meiosis A. homologous chromosomes pair forming bivalents B. homologous chromosomes cross over C. chromatids are separated during anaphase D. recombination is rare and abnormal E. chiasmata are formed 3. How do mitosis and meiosis I differ? A. Homologous chromosomes pair only in meiosis I. B. Homologous chromosomes are only visible in mitosis. C. Homologous chromosomes crossover in mitosis. D. Homologous chromosomes split at the centromere in meiosis I. E. Homologous chromosomes always segregate together 4. Which of the following structures is required for proper segregation of homologues at meiosis I, but not required for meiosis II segregation? A. synaptonemal complex B. centromeres (kinetochores) C. chiasmata D. nucleolar organizers regions E. kinetochore microtubules 5. Which of the following statements describes mitosis: A. mitosis results in formation of four daughter cells identical to the parent cell. B. mitosis is the failure of two members of a chromosome pair to separate properly at metaphase, so that both members of a pair go to one daughter cell, and the other cell gets neither. C. the mitotic spindle consists of microtubules, kinetochores, centromeres and a nucleolus. D. mitosis is the orderly duplication and distribution of the genome through successive cell divisions. E. mitosis is a mixture of chromosomal patterns in different cells - usually a mixture of cells with the correct number or structure of chromosomes, and cells which have the chromosomal abnormality and chromosomally abnormal cells. 6. Which of the following statement most correctly describes an event during meiosis: A. The first division separates the chromatids. B. During the first meiotic reduction division, the chromosomal pairs are partitioned so that each daughter cell contains one chromatid of each chromosome, i.e., it is haploid. C. Each pair of chromosomes (homologous chromosomes) come together in a process known as congression. D. Chromatids of homologous chromosomes may exchange parts in a process called synapsis. E. Meiosis II consists of DNA synthesis followed by separation of sister chromatids.
Posted on: Mon, 08 Jul 2013 14:06:29 +0000
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