Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 7, Problem 1ACQ
Figure 7.2 If a mutation occurs so that a
Figure 7.2 (a) In animals, sexually reproducing adults form haploid gametes from diploid germ cells. (b) Fungi, such as black bread mold (Rhizopus nigricans), have haploid-dominant life cycles. (c) Plants have a life cycle that alternates between a multicellular haploid organism and a multicellular diploid organism. (credit c “fern”: modification of work by Cory Zanker; credit c “gametophyte”: modification of work by “Vlmastra”/Wikimedia Commons)
Expert Solution & Answer
Summary Introduction
To analyze:
If a fungus can still reproduce in case the fungus undergoes mutation and is unable to produce a minus mating type.
Introduction:
Fungi can reproduce both sexually and asexually. Sexual reproduction can occur by fusion of two gametes that can be similar in size (isogamous), or dissimilar (anisogamous). Asexual reproduction occurs by fragmentation or asexual spore formation such as zoospores.
Explanation of Solution
Yes, a fungus that is unable to produce minus mating type will be able to reproduce. Reproduction in the fungus can also occur asexually by fragmentation of its hyphae to produce a daughter fungus or asexual spores.
Conclusion
The fungus that is unable to multiply sexually can still reproduce asexually by spore formation and fragmentation.
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Students have asked these similar questions
Why must the life cycle of sexually reproducing species alternate between haploid
and diploid stages?
A) Mitosis must occur at some point in the life cycle to prevent a doubling of
chromosomes in each generation.
B) Meiosis must occur at some point in the life cycle to prevent a doubling of
chromosomes in each generation.
C) Mitosis must occur at some point in the life cycle to prevent a reduction of
chromosomes in each generation.
D) Meiosis must occur at some point in the life cycle to prevent a reduction of
chromosomes in each generation.
Why is number 30 wrong
The most notable differences between gamete formation in most animals and gamete formation in plants is that ______________.
a) plants produce gametes in somatic tissue, whereas animals produce gametes in germ tissue
b) plants produce gametes by mitosis, whereas animals produce gametes by meiosis
c) plants produce only one of each gamete, but animals produce many gametes
d) plants produce gametes that are diploid, but animals produce gametes that are haploid
Chapter 7 Solutions
Concepts of Biology
Ch. 7 - Figure 7.2 If a mutation occurs so that a fungus...Ch. 7 - What is a likely evolutionary advantage of sexual...Ch. 7 - Which type of life cycle has both a haploid and...Ch. 7 - Which event leads to a diploid cell in a life...Ch. 7 - Meiosis produces daughter cells. a. two haploid b....Ch. 7 - At which stage of meiosis are sister chromatids...Ch. 7 - The part of meiosis that is similar to mitosis...Ch. 7 - If a muscle cell of a typical organism has 32...Ch. 7 - The genotype XXY corresponds to: a. Klinefelter...Ch. 7 - Abnormalities in the number of X chromosomes tend...
Ch. 7 - Aneuploidies are deleterious for the individual...Ch. 7 - Explain the advantage that populations of sexually...Ch. 7 - Describe the two events that are common to all...Ch. 7 - Explain how the random alignment of homologous...Ch. 7 - In what ways is meiosis II similar to and...Ch. 7 - Individuals with trisomy 21 are more likely to...
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