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Concept explainers
When Paramecium conjugate:
a. cytoplasmic division produces four daughter cells, eachhaving two micronuclei and two macronuclei.
b. one haploid micronucleus in each cell remains intact; theother three degenerate. The micronucleus of each cell divides once, producing two nuclei, and each cell exchanges one nucleus with the other cell. In each partner the two micronuclei fuse, forming a diploid zygote micronucleus in each cell.
c. the micronucleus of each of the disengaged partners divides meiotically. Macronuclei divide again in each cell, and the original micronucleus breaks down. Each cell has two haploid micronuclei; one of the macronuclei develops into a micronucleus.
d. the mating cells join together at opposite sites of their oral depression.
e. the micronucleus in each cell undergoes mitosis. When mitosis is complete, there are four diploid macronuclei; the micronucleus then breaks down.
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Chapter 27 Solutions
Biology: The Dynamic Science (MindTap Course List)
- Use this diagram of a Chlamydomonas cell for the following question. M CY CL is chloroplast, CY is cytoplasm, M is mitochondrion, N is nucleus. Which of the following locations would be the site of transcription of genes involved in the process of cellular respiration?arrow_forwardWhat are the main featuresof the meristematic cells? Whydo these cells need to have ahigh mitotic rate?arrow_forwardWhat are the phases displayed?arrow_forward
- label the somatic and reproductive cells of volvox (please draw on the picture and put arrow)arrow_forwardUse this diagram of a Chlamydomonas cell for the following question. M. CY CL is chloroplast, CY is cytoplasm, M is mitochondrion, N is nucleus. Which of the following locations would be the site of translation of genes involved in the process of cellular respiration? 00arrow_forwardWhat does it mean when chromosomes are said to condense during prophase of mitosis? How long are chromosomes after condensation is complete? How big is a typical dividing cell in a root or shoot? If a chromosome were still 20 μm long after condensation, would it be possible for division to pull half of it to one end of the cell and the other half to theother end?arrow_forward
- Use this diagram of a Chlamydomonas cell for the following question. M N CY CL is chloroplast, CY is cytoplasm, M is mitochondrion, N is nucleus. Which of the following locations would be the site of transcription of rRNA genes?arrow_forwardMatch the statement with the group – animals, plants, fungi, or a combination. Mitosis forms spores Answer 1- Choose...(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) - same options for all bellow...... Zygote undergoes mitosis Answer 2Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Haploid dominant Answer 3Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Meiosis forms gametes Answer 4Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Diploid dominant Answer 5 Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi),…arrow_forwardCytoplasm of a plant cell divides by the process of ________. a. telekinesis c. fission b. nuclear division d. cytokinesisarrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
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