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The Cavendish banana, the world's most popular fruit, is currently threatened by extinction due to a
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- Use the following information as the basis for answering the question: A diploid eukaryotic organism has 4 unique chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is submetacentric, and chromosome IV is acrocentric. Draw a detailed picture of a germ cell from this organism in Metaphase of Meiosis I and label all components and label all chromosomal and cellular components. Be sure to label each chromosome (I, II, III, or IV) and include the following in your drawing: centrosomes, 3 kinds of microtubules, metaphase/equatorial plate, and plasma membrane. Use the letter p to indicate a paternal chromosome and m to indicate a maternal chromosome.arrow_forwardPlease answer fast Sexual reproduction is a way to create genetic variation in the offspring.a. Describe in which circumstances this is desired.b. Describe the three different processes in a sexual life cycle that create genetic variation.For each process, describe in detail during which part or phase the sexual life cycle ittakes place.c. Consider this diploid animal cell in G1 phase. What is the haploid and the diploid number of this cell?arrow_forwardUse the following information as the basis for answering all questions: A diploid eukaryotic organism has 4 unique chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is a submetacentric, and chromosome IV is acrocentric. 23. How many total chromosomes are in a germ cell in the testis of this organism that is in Metaphase of Meiosis II? 24. How many total chromatids are in a germ cell in the testis of this organism that is in Metaphase of Meiosis II? 25. How many total telomeres are in a germ cell in the testis of this organism that is in Metaphase of Meiosis II?26. How many total chromosomes are in a germ cell in the testis of this organism that is in Anaphase of Meiosis II? 27. How many total chromatids are in a germ cell in the testis of this organism that is in Anaphase of Meiosis II? 28. How many total telomeres are in a germ cell in the testis of this organism that is in Anaphase of Meiosis II?arrow_forward
- In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. (a) Draw four rounds of mitosis for a stem cell, and label the daughter cells. (b) For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. (c) Explain what would happen if stem cells divided like spermatogonia.arrow_forwardCompare Mitosis and Meiosis after watching these videos: Cell Cycle, Mitosis and Meiosis https://www.khanacademy.org/science/high-school-biology/hs-reproduction-and-cell-division/hs-the-cell-cycle-and-mitosis/v/mitosis Mitosis (video) | The cell cycle and mitosis | Khan Academy Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase. www.khanacademy.org https://www.khanacademy.org/science/high-school-biology/hs-reproduction-and-cell-division/hs-meiosis/v/phases-of-meiosis-i Phases of meiosis I (video) | Meiosis | Khan Academy How homologous chromosomes separate into two sets. Prophase I, metaphase I, anaphase I, and telophase I. www.khanacademy.org https://www.khanacademy.org/science/biology/cellular-molecular-biology/meiosis/v/comparing-mitosis-and-meiosis?modal=1 Comparison Mitosis vs. Meiosis: Side by Side Comparison Mitosis vs Meiosisarrow_forwardIn human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. Draw four rounds of mitosis for a stem cell and label; the daughter cells. For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. What would happen if stem cells divided like spermatogonia?arrow_forward
- How do organisms with haploid-dominant life cycles ensure continued genetic diversification in offspring without using a meiotic process to make gametes? Explain your reasoning. Write 3 paragraphs, 3-5 sentences each.arrow_forwardUse the following information as the basis for answering all questions: A diploid eukaryotic organism has 4 unique chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is a submetacentric, and chromosome IV is acrocentric. 16. How many total chromosomes are in a germ cell in the ovary of this organism that is in Metaphase of Meiosis I? 17. How many total chromatids are in a germ cell in the ovary of this organism that is in Metaphase of Meiosis I? 18. How many total telomeres are in a germ cell in the ovary of this organism that is in Metaphase of Meiosis I?19. How many total chromosomes are in a germ cell in the ovary of this organism that is in Anaphase of Meiosis I? 20. How many total chromatids are in a germ cell in the ovary of this organism that is in Anaphase of Meiosis I? 21. How many total telomeres are in a germ cell in the ovary of this organism that is in Anaphase of Meiosis I?arrow_forwarduse the image to answer these two questions - draw all possible metaphase I arrangements that would occur if this cell were undergoing meiosis. be sure to label the alleles as shown above -draw all possible gametes that will result from this cell undergoing meiosis. again, be sure to label the alleles (there should be EIGHT total possbilities, please draw ALL of them)arrow_forward
- A species has a diploid chromosome number of 6. If a cell from an individual of this species undergoes meiosis, what is the probability that a gamete made from this diploid cell will inherit only maternal copies of chromosomes (i.e., that the gamete will not inherit any paternal chromosomes)? Show your work.arrow_forwardFill 3 blank spaces using MITOSIS MEIOSIS OR FERTILIZATIONarrow_forwardSummarize the process by which meiosis reduces thechromosome number.arrow_forward
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning