Cell Division – Review Unit 5

Cell Division - Review Comparison Mitosis Meiosis Type of Reproduction Type of Cell Formed by process Amount of Chromosomes in final cells

Cell Division - Review Fruit Fly 4 Human 23 Earthworm 36 Rice 12 Fill in the chart with the appropriate number of chromosomes. Organism Diploid Cell Haploid Cell Fruit Fly 4 Human 23 Earthworm 36 Rice 12

Cell Division 1.What is the result of the fertilization of an egg? It restores the diploid number of chromosomes It deletes polypeptide chains in the chromosomes It gives offspring more chromosomes than the parents It gives offspring fewer chromosomes than the parents

Cell Division 2.Which statement best describes an advantage of asexual reproduction for a population of organisms? The population can increase in number more rapidly The population can develop greater genetic diversity The population can maintain the same number of organisms The population can adapt more quickly to a changing environment

Cell Division 3.How many daughter cells are formed in meiosis? 1 2 4

Cell Division 4.Two gametes containing 20 chromosomes fuse during fertilization. How many chromosomes will the zygote cell contain? 10 20 40 80

Cell Division 5.A cell with 24 chromosomes undergoes mitosis twice. How many chromosome will each daughter cell have? 6 12 24 48

Cell Division 6.Before mitosis begins, which happens before the nucleus starts dividing? The cytoplasm separates The DNA replicates The sister chromatids separate The homologous chromosomes cross over

Cell Division 7.Why is meiosis important for sexual reproduction? It allows the zygote formed from fertilization to have triple the chromosome number of the organism It allows gametes to have twice the original number of chromosomes of the organism It allows gametes to have half the original number of chromosomes of the organism It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism

Cell Division 8.What is the result when a single cell reproduces by mitosis? Two cells with genetic material identical to the parent cell Two cells with half the genetic material of he parent cell Four cells with half the genetic material of the parent cell Four cells with genetic material identical to the parent cell

Cell Division 9.Which characteristic is present in offspring produced by sexual reproduction, but is missing in offspring produced by asexual reproduction? An identical copy of parent chromosomes Twice the number of parent chromosomes Only half the number of parent chromosomes An independent assortment of parent chromosomes

Cell Division 10.Which term describes the failure of homologous chromosomes to segregate properly during meiosis? Polyploidy Recombination Nondisjunction Independent assortment

Cell Division 11.Which statement correctly describes the number of chromosomes in body cells and gametes? Body cells and gametes are both diploid Body cells and gametes are both haploid Body cells are diploid and gametes are haploid Body cells are haploid and gametes are diploid

Cell Division 12.How are sexual reproduction and asexual reproduction different? Sexual reproduction produces offspring identical to the parents, but asexual reproduction produces offspring with traits from both parents. Asexual reproduction produces offspring identical to the parents, but sexual reproduction produces offspring with traits from both parents. Sexual reproduction only occurs in multicellular organisms, but asexual reproduction only occurs in unicellular organisms. Asexual reproduction only occurs in multicellular organisms, but sexual reproduction only occurs in unicellular organisms.

Cell Division 13.During which phase of the cell cycle is the cell growing and preparing for cellular division? Cytokinesis Anaphase Prophase Interphase

Cell Division 14.Which process produces the most variation within a species? Asexual reproduction Sexual reproduction Mitosis Cloning

Cell Division 15.Which process allows for an organism to increase the number of body cells during development? Budding Conjugation Meiosis Mitosis

Cell Division 16.During which phase of mitosis do the chromosomes line up along the middle of the dividing cell? Prophase Telophase Metaphase Anaphase

Cell Division 17.During normal mitotic division, a parent cell that has four chromosomes will produce two daughter calls, each containing Two chromosomes Four chromosomes Eight chromosomes Sixteen chromosomes

Cell Division 18.Gametes are produced in the process of Mitosis Meiosis Crossing-over Replication

Cell Division 19.Unlike mitosis, meiosis results in the formation of Diploid cells Haploid cells 2N daughter cells Body cells

Cell Division 20.What is formed at the end of meiosis? Two genetically identical cells Four genetically identical cells Two genetically different cells Four genetically different cells