Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 26.3, Problem 2R
Summary Introduction
To review:
The reason as to why inhibition of conjugation in paramecium leads to the death of paramecia after about 350 rounds of asexual division.
Introduction:
Conjugation is a sexual process in paramecium where paramecium cells of compatible mating types fuse and exchange their genetic material reciprocally. In case paramecium is not allowed to conjugate, they lose vitality and begin to die after about 350 rounds of cell divisions.
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After plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage?
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Life: The Science of Biology
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- Why do you think that the fungal sexual reproduction occurs under extreme conditions only? Why not at all times since sexual replication would benefit the gene pool better? what do you think? Original and simple answer please thank you :)arrow_forwardIn embryophytes, especially spermatophya, what is the difference between a "sporocyte" (e.g., megasporocyte) and the actual spore (e.g., megaspore)? a) Meiosis: Megasporocyte is still diploid, megaspore haploid b) Mitosis, number of nuclei: Megaspore has eight cell nuclei, megasporocyte only one c) Cytokinesis: Megasporocyte has only one cell, Megaspore can have several (as endosporic gametophyte). d) None: the two terms are synonymous. e) Meiosis: Megaspore is still diploid, megasporocyte haploidarrow_forwardFusion of cytoplasm which happens when two hyphae of genetically compatible mating types come together during sexual reproduction, is called: * O zygote formation O karyogamy none is correct plasmogamy fertilizationarrow_forward
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