What is the relationship between the operational sex ratio (OSR) and sexual selection in a species?Female-biased OSRS result in stronger sexual selection on males.Male-biased OSRS result in stronger sexual selection on males.An OSR of one results in stronger sexual selection on females.An OSR greater than one results in no sexual selection on either sex.

Operational sex ratio OSR operational sex ratio (OSR) can be defined as the sexual competition…

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What is the relationship between the operational sex ratio (OSR) and sexual selection in a species?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 1QP

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Concept explainers

Sexual Motivation

Sexual motivation refers to a person's overall desire for sexual activity. It is an unusual motivation. Generally, among lower animals, the term 'drive' is commonly referred to as sexual motivation. It means a certain internal force drags the animal to be involved in reproductive behavior. On the contrary, humans are not simply driven by any internal force; rather, the sexual motivation in humans is due to several factors such as biological (hormones, genes), environmental (familial upbringing, chemical exposure) and physiological factors (culture, desire) which further determine engagement in sexual activities.

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What is the relationship between the operational sex ratio (OSR) and sexual selection in a species?
Female-biased OSRS result in stronger sexual selection on males.
Male-biased OSRS result in stronger sexual selection on males.
An OSR of one results in stronger sexual selection on females.
An OSR greater than one results in no sexual selection on either sex.

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