Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 22TYK
What is the evolutionary significance of bdelloid rotifers, which have not engaged in sex in 40 million years?
- a. They show that asexual reproduction is more advantageous because it ensures that successful combinations of alleles are passed to offspring.
- b. Although their 400 species originated through sexual reproduction, each species has successfully cloned itself since it arose.
- c. They exchange genetic material through horizontal gene transfer while in a state of suspended animation during dry periods, supporting the idea that
genetic variation is evolutionarily advantageous. - d. Their long history shows that sexual reproduction and genetic variation are not required for evolutionary success.
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Students have asked these similar questions
Horizontal gene transfer probably started soon after endosymbiosis. It has resulted in genes being moved from the mitochondrion to the nucleus.
What is a reasonable explanation for why some genes still remain in the mitochondria?
A.
The products of those genes are rapidly damaged and need to be quickly replaced.
B.
The products of those genes are not required for organelle function.
C.
The ability for lateral gene transfer ended about a billion years ago and some genes simply got “stuck” within mitochondria.
D.
The products of those genes are only needed in the mitochondria.
Which of the following is a benefit of meiosis?
A. The generation of offspring with the exact genetic material of the parents ensures the offspring are well-liked to their environment.
B. The independent assortment of alleles increases genetic diversity, which allows the species to evolve.
C. The separation of chromatids in meiosis creates offspring with only the most desirable traits, which increases the likelihood of species survival.
D. The use of meiosis in reproduction allows for the rapid production of many offspring, which increases the odds of species survival.
Identify which of the following statements is a lie?Select one:
a. Budding yeasts first start from being a haploid cell and further becomes a diploid cell.
b. Budding yeasts secrete a signaling molecule called a “mating factor”.
c. The mating factor in the sexual reproduction of yeast is directed to all yeast cells in the vicinity.
Chapter 13 Solutions
Study Guide for Campbell Biology
Ch. 13 - a. How many chromosomes are there in the somatic...Ch. 13 - Prob. 2IQCh. 13 - The following diagrams represent some of the...Ch. 13 - a. How many different assortments of maternal and...Ch. 13 - Label the following diagram to review the terms...Ch. 13 - Describe the key events of the following stages of...Ch. 13 - Create a concept map to help you organize your...Ch. 13 - What does meiosis do? a. It produces haploid cells...Ch. 13 - Asexual reproduction of a diploid organism a. is...Ch. 13 - Homologous chromosomes a. have identical DNA...
Ch. 13 - Which of the following represents a clone? a. a...Ch. 13 - What is a karyotype? a. a genotype of an...Ch. 13 - A reduction in the number of chromosomes per cell...Ch. 13 - In most fungi and some protists, a. Gametes are...Ch. 13 - In the alternation of generations found in plants,...Ch. 13 - A synaptonemal complex would be found during a....Ch. 13 - During meiosis I, a. Homologous chromosomes...Ch. 13 - Compared with one of the four cells produced by...Ch. 13 - Meiosis II is similar to mitosis because a. sister...Ch. 13 - The Texan nine-banded armadillo (Dasypus...Ch. 13 - Which of the following is a key difference between...Ch. 13 - Which of the following is not true of homologous...Ch. 13 - Which of the following statements is not true? a....Ch. 13 - In a species with a diploid number of 6, how many...Ch. 13 - In a sexually reproducing species with a diploid...Ch. 13 - The calculation of offspring in question 18...Ch. 13 - Prob. 20TYKCh. 13 - Which of the following statements describes why or...Ch. 13 - What is the evolutionary significance of bdelloid...
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- The figure below shows the life cycle of the fungus Neurospora. The adult stage of the Neurospora is a multicellular haploid: a. Between which two stages of the Neurospora life cycle do most mitotic cell divisions occur? b. Neurospora has an arginine amino acid synthesis pathway shown below: Suppose I have a neurospora strain that has a mutation such that it will not grow unless I supplement the media (food) with arginine (but not with citrulline or ornithine). What gene is mutated? Explain your reasoning. c. Suppose I take the strain above that only grows with arginine supplements and cross it to a different mutant Neurospora strain that grows with arginine and citrulline supplements but not ornithine supplements. Assming genes A, B and C are unlinked and there is only one mutation per strain: i) What percentage of the progeny will grow on ornithine? ii) What percentage on citrulline? iii) What percentage on arginine? Show your work for i), ii) and iii). [Can be answered in less…arrow_forwardwhat was the connection between gas production and the growth rate? A. the rate of gas production should be expected to be significantly lower than the growth rate since the yeast will not use gas as they replicate B. a higher rate of gas production most likely correlated with a lower growth rate C.a higher rate of gas production most likely correlated with a higher growth rate, but it's not a 1 to 1 correlation because gas is also produced outside of mitosis D. there is no correlation between the twoarrow_forwardIn animals, which of the following distinguishes meiosis from mitosis? a. Meiosis is a form of asexual division, whereas mitosis is a form of sexual division. b. In mitosis, single loops of DNA are copied, whereas meiosis involves multiple linear chromosomes. O c. Mitosis is used for the repair of cells, whereas meiosis creates cells for sexual reproduction. d. Mitosis occurs in prokaryotic cells, whereas meiosis occurs in eukaryotic cells.arrow_forward
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