Evolution
Evolution
4th Edition
ISBN: 9781605356051
Author: Douglas Futuyma, Mark Kirkpatrick
Publisher: SINAUER
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Chapter 10, Problem 2PDT
Summary Introduction

To determine: The reasons behind high variability among certain parthenogenetic species.

Introduction: Variation is the inheritable and permanent change in the structure of chromosomes. Evolution of species is a very complex procedure, as mutations are selected by natural selection in different environmental conditions. Variation also leads to diversity within species, within the genome, or within a single gene. Parthenogenetic species are those species that can produce both male and female gametes.

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Q8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?
How do I determine the inhertiance pattern from the pedigree diagram?
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