Meiosis & Mitosis - Polytech High School

1 Meiosis & Mitosis How many daughter cells are formed in Meiosis ? After fertilization, the resulting zygote begins to divide by A. Binary fission Why is Meiosis important for sexual reproduction? decrease the genetic variation in the daughter cells. produce daughter cells that are identical to the parent. produce daughter cells with half the number of chromosomes as the parent. increase the risk of genetic disorders in the daughter cells. If a zygote has 4 chromosomes, the somatic cells formed from it have _____ chromosomes. Unlike gametes, body cells are called cells If a cell with 32 chromosomes divides by Meiosis , how many chromosomes will each daughter cell contain?

2 As shown below, somatic cells of mosquitoes have 3 pairs of homologous chromosomes. Which of the following is a correctly formed gamete? A B C D If a skin cell starts out with 24 Chromosome and undergoes Mitosis , then how many will the daughter cells have? In Meiosis if the parent cells has 40 chromosomes, then how many will the daughter cells have? Somatic cells reproduce by _____ , while sex cells reproduce by _____ . ; Mitosis ; Mitosis ; Meiosis ; Meiosis Which of the following statements is true in humans? Mitosis produces cells that have a haploid number of chromosomes Meiosis produces cells that have a diploid number of chromosomes Meiosis produces cells that have a haploid number of chromosomes Human gametes normally have _____ chromosomes 23 26 46 48 Haploid cells can be seen in the field Each of the two daughter cells that results from Mitosis contains same number of chromosomes but has genes different from those of the parent cell.

3 Same number of chromosomes and has genes identical to those of the parent cell the number of chromosomes but has genes different from those of the parent cell the number of chromosomes and has genes identical to the parent cell. A pig s liver cell has 38 chromosomes. How many chromosomes will be present in the daughter cells after Meiosis ? What is this individual s sex? A diploid cell in a buffalo has 60 chromosomes. A sperm or egg cell in a buffalo can be expected to have chromosomes chromosomes chromosomes chromosomes The process of Meiosis with diploid cells and ends with diploid cells with haploid cells and ends with diploid cells with diploid cells and ends with haploid cells with haploid cells and ends with haploid cells Which of the following is true regarding a muscle cell and a nerve cell?

4 Are the same size have the same genetic information both have chloroplasts is haploid and one is diploid A diploid cell contains two pairs of homologous chromosomes. Each pair is heterozygous for a pair of alleles, Aa and Bb respect. After Meiosis , how many different combinations of these alleles could be produced in the haploid daughter cells? In a species of corn, the diploid number of chromosomes is 20. What would be the number of chromosomes found in each of the normal egg cells produced by this species? Which statement concerning both Mitosis and Meiosis is correct?

5 Produces 4 haploid cells while Mitosis produces 2 diploid cells produces 4 diploid cells while Mitosis produces 2 haploid cells. produces 2 diploid cells while Mitosis produces 4 haploid cells produces 2 haploid cells while Mitosis produces 4 diploid cells Name the error in Meiosis that caused this disorder The diagram below shows a cellular process that occurs in organisms. This process is known as Mitosis Meiosis Fertilization Photosynthesis The diagram below shows homologous chromosomes during prophase I of Meiosis . Which of the following correctly describes the process being illustrated?

6 In which the DNA content of the gene is altered. of sister chromatids and segregation of alleles over in which alleles are exchanged Mendel arrived at the conclusion that the two elements affecting a particular trait are separated during gamete formation. This has since been confirmed by the discovery of [A] eggs and sperm [B] Mitosis [C] fertilization [D] Meiosis Mendel concluded that genes for two or more different traits assort independently of one another at gamete formation. He reached this conclusion because none of the garden pea traits he studied were [A] visible [B] recessive [C] codominant [D] linked Mendel s second experiment with pea plants was a dihybrid cross in which he crossed two true breeding parents with contrasting forms for two traits.

7 The F 1 hybrids all showed the dominant form for both traits. When the F 1 was self-pollinated, the F 2 offspring showed four phenotypes in the ratio of 9/16; 3/16; 3/16; 1/16. Which principle resulted from this experiment? [A] recessive alleles [B] dominance [C] linkage [D] independent assortment