How is it possible for aphids to feed only on thecarbohydrate-rich but nutrient-poor sap of phloemvessels in plants? Why do symbionts that aretransmitted horizontally show less genome reduction, asopposed to the significant genome reduction observedin heritable symbionts?

How is it possible for aphids to feed only on thecarbohydrate-rich but nutrient-poor sap of phloemvessels in plants? Why do symbionts that aretransmitted horizontally show less genome reduction, asopposed to the significant genome reduction observedin heritable symbionts?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter11: Meiosis: The Cellular Basis Of Sexual Reproduction

Section: Chapter Questions

Problem 2ITD

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Genomic studies

Genomic studies (genomics) is the study of the whole genome of an organism. Using bioinformatics and high-performance computing, genomic researchers examined massive amounts of deoxyribonucleic acid (DNA)-sequence data to discover variations or mutations that affect drug response, health, or disease. Genomics is a much younger discipline than genetics, having only emerged in the last few decades as a result of technological advancements in DNA sequencing and computational biology.

Question

How is it possible for aphids to feed only on the
carbohydrate-rich but nutrient-poor sap of phloem
vessels in plants? Why do symbionts that are
transmitted horizontally show less genome reduction, as
opposed to the significant genome reduction observed
in heritable symbionts?

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