Based upon the information from the online meiosis tutorial, answer each of the following questions: 1. What term is used for the method of asexual reproduction used by coral? _________________________________ 2. What do we call a "pictorial display of metaphase chromosomes" from a mitotic cell? ______________________ 3. (yes or no) Does sexual reproduction lead to offspring that are clones of the parents? _____________________ 4. What do we call the meiosis error when "homologues don't separate in meiosis I" __________________________ _____________________________________________ 5. What is the diploid chromosome number for humans? (give the number) _________________________________ 6. Are human egg and sperm cells haploid or diploid? _______________________________________________________ 7. During what exact stage of Meiosis does "independent assortment" occur? ___________________________________ 8. During what exact stage of Meiosis does "crossing over" occur? ______________________________________________ 9. What specific organism in the meiosis lesson is described as triploid? (3 words) __________________________ 10. Name a genetic condition that can occur due to non-disjunction ____________________________________________ Name the exact stage of meiosis I where each of the following occurs: Homologous chromosomes pair to form tetrads and synapsis occurs a) _______ Paired homologous chromosomes align at the metaphase plate b)___________ Two complete haploid daughter cells form c)___________ The nuclear membrane disappears d)__________ Homologous pairs separate and start to move towards opposite poles e)__________ Separated homologous pairs reach the opposite poles f)__________
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QUESTION 1: All of the following are objectives of meiosis: a. to increase the chromosome number in the offspring b. to make identical copies of the offspring c. to reduce the chromosome number in the offspring d. to produce non-identical copies of the offspring e. both c and d are correct (3 points) QUESTION 2: In the typical somatic cell, the number of chromosomes is symbolized as: a. 1n b. 2n c. 3n d. 4n e. 5n (3 points) QUESTION 3: Which of the following are incorrectly stated? a. at the end of meiosis, two diploid daughter cells are produced b. at the end of mitosis, four haploid daughter cells are formed c. mitosis occurs during the production of gametes in ovaries and testes d. meiosis is completed after one cell division e. all of the above answers are incorrect (3 points) QUESTION 4: Both body cells and gamete cells participate in meiosis. a. true b. false (2 points) QUESTION 5: All are phases of mitosis except: a. metaphase b. anaphase c. telophase d. a, b, and c are correct e. homologous chromosomes (3 points) QUESTION 6: Which example below does not represent an example of mitosis? a. sperm and egg cell during fertilization b. grafting an apple tree with a pear tree c. T-cells dividing d. regeneration of a planaria e. repairs to tissue damage
Anand J.
1. What is one common misconception about mitosis and meiosis? 2. How is meiosis different from mitosis? 3. What is separated in meiosis I? What is separated in meiosis II? 4. Describe what is happening in the cell in prophase, metaphase, anaphase, and telophase of meiosis I. Pay particular attention to chromosome location and number. 5. What is crossing over and when does it occur? 6. What is meant by random arrangement? How does this contribute to genetic diversity? 7. What is the outcome of meiosis I when starting with one diploid cell? What is the final outcome at the end of meiosis II? 8. Describe what is happening in the cell in prophase, metaphase, anaphase, and telophase of meiosis II. Pay particular attention to chromosome location and number. 9. How does gamete formation differ in males and females? 10. Determine if the following are haploid or diploid: spermatogonium, primary spermatocyte, secondary spermatocyte, spermatids, oogonium, primary oocyte, secondary oocyte, ovum. 11. What happens to the chromosome number in meiosis?
Sana R.
The diagram at right shows a cell in meiosis. (a) Label the appropriate structures with these terms, drawing lines or brackets as needed: chromosome (label as duplicated or unduplicated), centromere, kinetochore, sister chromatids, nonsister chromatids, homologous pair, homologs, chiasma, sister chromatid cohesion, alleles (of the $F$ and $H$ genes). (b) Describe the makeup of a haploid set and a diploid set. (c) Identify the stage of meiosis shown.
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