Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 12, Problem 3DAA
Summary Introduction

To determine: The abnormality of metaphase I that takes place in the oocytes shown in the Fig. 12.11 B, 12.11 C, and 12.11 D.

Introduction: BPA is a synthetic chemical that mimics the female sex hormone (estrogen) that is found in the animals. Bisphenol A (BPA) is used in the manufacturing of different plastics including polycarbonate plastics such as dental sealants, baby bottles, and food and drink containers. Research studies show that these chemicals possess capability to disrupt the meiotic division and then damage the reproductive function of the organism (experiments conducted in the mice oocytes).

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  • GENETICS In a sexually reproducing diploid organism in which 2n=6, a normal meiocyte in reduction should exhibit a total of 3 bivalents at the metaphase plate. Consider the following organism in the previous statement. if there is no crossing over, the number of possible haploids (gamete) genotypes generated by "chromosome shuffling" during meiosis is _____?
    Rainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male sperm are haploid. In the wild, when the sperm fertilizes an egg, the extra set of chromosomes is kicked out, resulting in a diploid offspring.Triploid trout are produced in the lab to provide sterile fish stock for lakes. Shortly after the eggs are fertilized, scientists place them in a warm water bath to prevent the extra chromosomes from being removed. The result is a triploid fish that cannot reproduce.Rainbow Trout: n = 30Select the row that correctly shows the ploidy for the trout at different reproductive stages. Select one: a. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab n = 30 2n = 60 3n = 90 2n = 60 b. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab 2n = 60 n = 30 2n = 60 2n = 60 c. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab 2n = 60 n = 30…
    Rainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male sperm are haploid. In the wild, when the sperm fertilizes an egg, the extra set of chromosomes is kicked out, resulting in a diploid offspring.Triploid trout are produced in the lab to provide sterile fish stock for lakes. Shortly after the eggs are fertilized, scientists place them in a warm water bath to prevent the extra chromosomes from being removed. The result is a triploid fish that cannot reproduce.Rainbow Trout: n = 30 Global warming is an issue affecting many species around the world. Warming has caused the temperatures in lakes and rivers to increase and stay elevated for longer periods of time. Select the FOUR numbers that describe the possible effects of global warming on the reproduction of rainbow trout in the wild and on biodiversity. The extra set of chromosomes remains. The extra set of chromosomes is removed. The offspring are diploid (2n). The offspring are triploid…
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    Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY