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Stages of a Neurospora cross Sexual spores grow to adults Asci Meiosis 1 Synchronous division and fusion + to form diploid meiocytes Cross- fertilization Maternal nucleus Mating type A Maternal nucleus Mating type a wo mutants are FIGURE 3-9 The lfe cycle of Neurospora crassa, the orange bread mold. Self-fertilization is not possible in this species: there are two mating types, determined by the alleles A and a of one gene, and either can act as "female." An asexual spore from the opposite mating type fuses with a receptive hair, and a nucleus from the asexual spore trav- els down the hair to pair with a female nucleus in the knot of cells. The A and a d types will be pair then undergo synchronous mitoses, finally fusing to form diploid meiocytes.

Stages of a Neurospora cross Sexual spores grow to adults Asci Meiosis 1 Synchronous division and fusion + to form diploid meiocytes Cross- fertilization Maternal nucleus Mating type A Maternal nucleus Mating type a wo mutants are FIGURE 3-9 The lfe cycle of Neurospora crassa, the orange bread mold. Self-fertilization is not possible in this species: there are two mating types, determined by the alleles A and a of one gene, and either can act as "female." An asexual spore from the opposite mating type fuses with a receptive hair, and a nucleus from the asexual spore trav- els down the hair to pair with a female nucleus in the knot of cells. The A and a d types will be pair then undergo synchronous mitoses, finally fusing to form diploid meiocytes.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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In Figure 3-9,
a. identify the diploid nuclei.
b. identify which part of the figure illustrates Mendel’s
first law.

Stages of a Neurospora cross Sexual spores grow to adults Asci Meiosis 1 Synchronous division and fusion + to form diploid meiocytes Cross- fertilization Maternal nucleus Mating type A Maternal nucleus Mating type a wo mutants are FIGURE 3-9 The lfe cycle of Neurospora crassa, the orange bread mold. Self-fertilization is not possible in this species: there are two mating types, determined by the alleles A and a of one gene, and either can act as "female." An asexual spore from the opposite mating type fuses with a receptive hair, and a nucleus from the asexual spore trav- els down the hair to pair with a female nucleus in the knot of cells. The A and a d types will be pair then undergo synchronous mitoses, finally fusing to form diploid meiocytes.
Transcribed Image Text:Stages of a Neurospora cross Sexual spores grow to adults Asci Meiosis 1 Synchronous division and fusion + to form diploid meiocytes Cross- fertilization Maternal nucleus Mating type A Maternal nucleus Mating type a wo mutants are FIGURE 3-9 The lfe cycle of Neurospora crassa, the orange bread mold. Self-fertilization is not possible in this species: there are two mating types, determined by the alleles A and a of one gene, and either can act as "female." An asexual spore from the opposite mating type fuses with a receptive hair, and a nucleus from the asexual spore trav- els down the hair to pair with a female nucleus in the knot of cells. The A and a d types will be pair then undergo synchronous mitoses, finally fusing to form diploid meiocytes.
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