CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 8, Problem 14TYK
Summary Introduction
To explain: The three different processes that occur during a sexual life cycle that increase the genetic diversity of offspring.
Concept introduction: Sexual reproduction increases the genetic diversity thatenables organisms to survive better in the unfavorable environment. Genetic diversity mainly arises due to the shuffling of chromosomes during the meiosis process. Different combinations of chromosomes at metaphase 1 of meiosis occurring in the gametes are one process leading to the genetic diversity. Crossing over during prophase Iincreases the chance of producing a new combination of genes by exchanging chromosomes.
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A paradox of sexual reproduction is that despite its being widespread in nature, the question of why it exists at all is still unresolved. What are some disadvantages of sex? What are some consequences of sex that make it so important?
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Sexual reproduction results in offspring that are genetically different from one another and from their parents. Describe four mechanisms that produce this genetic variation. Do any of these mechanisms occur in asexualreproduction?
Chapter 8 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a grasshopper contains 24...Ch. 8 - Which of the following is not a function of...Ch. 8 - It is difficult to observe individual chromosomes...Ch. 8 - A fruit fly somatic cell contains 8 chromosomes....Ch. 8 - If a fragment of a chromosome breaks off and then...Ch. 8 - Which of the following phases of mitosis is...Ch. 8 - A biochemist measured the amount of DNA in cells...Ch. 8 - A micrograph of a dividing cell from a mouse...Ch. 8 - Cytochalasin B is a chemical that disrupts...
Ch. 8 - Why are individuals with an extra chromosome 21,...Ch. 8 - In the light micrograph below of dividing cells...Ch. 8 - An organism called a plasmodial slime mold is one...Ch. 8 - Prob. 14TYKCh. 8 - Discuss the factors that control the division of...Ch. 8 - Compare cytokinesis in plant and animal cells. In...Ch. 8 - Sketch a cell with three pairs of chromosomes...Ch. 8 - Suppose you read in the newspaper that a genetic...Ch. 8 - Bacteria are able to divide on a faster schedule...Ch. 8 - Prob. 20TYKCh. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - What you think of as a banana is a Cavendish, one...Ch. 8 - SCIENTIFIC THINKING The study described in Module...
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- Which of the following would not be considered a component of sexual reproduction? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer a Production of eges and sperm in separate sexes in an animal species b. Gradual acquisition of multiple mutations in a purely mitotically dividing eukaryotic single celled organism Occasional production of diploids through fusions of cells of opposite mating types in a yeast that largely reproduces through clonal mitotic divisions "Alteration of generations" between haploid and diploid organisms in a fernarrow_forwardExplain how a sexual life cycle maintains a constant number of chromosomes from one generation to the next.arrow_forwardDescribe three ways variation can be introduced into offspring produced by sexual reproduction.arrow_forward
- Describe what sexual dimorphism is and why its existence is puzzling.arrow_forwardDescribe the added “costs” of sexual reproduction for an organism.arrow_forwardWhich factors are responsible for successful reproduction in male? Do you think the reproductive efficiency of male is declining with the passage of time? Support your point of view with examples.arrow_forward
- Explain how three processes unique to sexual reproduction generatea great deal of genetic variation.arrow_forwardExplain the benefit of sexual reproduction.arrow_forwardExplain the paradox and adaptive significance of sex. Provide examples and data thatsupport the theories regarding the evolution of sexual reproduction.arrow_forward
- Explain the Advantages and Disadvantages of Asexual Reproduction.arrow_forwardFertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single eggarrow_forwardDescribe the main differences between asexual and sexual reproduction. Why are both types of reproduction common?arrow_forward
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