Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 23.2, Problem 4R
Summary Introduction
To review:
The differences between the two hypotheses for the wide range of genome sizes among organisms.
Introduction:
The size of genome in different organisms from bacteria to humans is very different. The genome of the bacteria Mycoplasma has about 470 genes, while the genome of humans has almost 21,000 genes. There is some sort of correlation between the organismal complexity and the genome size, but this is not a direct correlation.
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Life: The Science of Biology
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- b ) Describe the contribution of Griffith , Avery et al . , Hershey & Chase , and Watson and Crick in the field of genetics . You are characterizing a newly discovered organism . You have noticed that the organism grows on two carbon sources - sucrose and mannitol . Whenever you add both sugars to the medium , sucrose will be completely metabolized before mannitol . a ) What is this growth pattern called ? b ) Describe a possible growth curve of sequential metabolism of the sugars . arrow_forwardHow do the following genomic features of prokaryotic organisms compare with those of eukaryotic organisms? How do they compare among eukaryotes? a. Genome size b. Number of genes c. Gene density (bp/gene) d. Number of exonsarrow_forwardwhich of the following statements about genome-wide association studies (GWAS) is correct? A) involves scanning the genomes of thousands of unrelated individuals with a particular mutation and comparing them with the genomes of individuals who do not have the mutation. B) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease C) attempt to identify genes that influence mutation risk D) attempt to identify genes that influence disease risk E) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease and GWAS attempt to identify genes that influence disease riskarrow_forward
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