BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Chapter 24.1, Problem 3LO
Summary Introduction
To determine: The reason that genomes evolve at different times.
Introduction: The genotype of an organism is dependent on its genome and also on the environment of the organism. In some of the animals, it is not as typical as the genotype of the mother plays a crucial role.
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What are the mechanisms in which DNA genomes evolve? Discuss two or more and provide examples and why
Determine which of the genomic traits are associated with prokaryotes or eukaryotes. These traits include relative genome size.
number of genes, gene density, and number of exons.
Prokaryote
about one gene every 2000 to 100000 bp
relatively large, variable size genome
multiple introns
Answer Bank
relatively small genome
about one gene every 1000 bp
500 to 7000 genes
Eukaryote
6000 to 30000 genes
few, if any, introns
Outline the processes of exon shuffling and horizontal gene transfer, and explain how they produce genetic variation.
Chapter 24 Solutions
BIOLOGY
Ch. 24.1 - Prob. 1LOCh. 24.1 - Prob. 2LOCh. 24.1 - Prob. 3LOCh. 24.2 - Prob. 1LOCh. 24.2 - Prob. 2LOCh. 24.2 - Prob. 3LOCh. 24.2 - Explain why genome size and genome number do not...Ch. 24.3 - Define the terms segmental duplication, genome...Ch. 24.3 - Prob. 2LOCh. 24.4 - Prob. 1LO
Ch. 24.4 - Prob. 2LOCh. 24.5 - Prob. 1LOCh. 24.5 - Prob. 2LOCh. 24.5 - Prob. 3LOCh. 24 - Prob. 1DACh. 24 - Prob. 1IQCh. 24 - Prob. 2IQCh. 24 - Prob. 3IQCh. 24 - Humans and pufferfish diverged from a common...Ch. 24 - Prob. 2UCh. 24 - Prob. 3UCh. 24 - Homologous genes in distantly related organisms...Ch. 24 - All of the following are believed to contribute to...Ch. 24 - What is the fate of most duplicated genes? a. Gene...Ch. 24 - Chimp and human DNA whole-genome sequences differ...Ch. 24 - Prob. 2ACh. 24 - Analyze the conclusion that the Medicago...Ch. 24 - Analyze why an herbicide that targets the...Ch. 24 - The FOX2 gene is associated with speech in human....Ch. 24 - One of the common misconceptions about sequencing...Ch. 24 - How does horizontal gene transfer (HGT) complicate...
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- The Selfish Gene is a radical theory that argues that all living creatures are essentially vehicles for their genes- hence, we all are a “survival machine" for our genes. In the light of what you have learned about the molecular structure and function of the gene, is this perspective still relevant? Cite specific biological phenomena to prove your point. References:arrow_forwardOutline the different rates of evolution that are typically seen in different parts of a protein-encoding gene. What might account for these differences?arrow_forwardExplain mutation as a force of evolution (how do mutations contribute to biological change?)arrow_forward
- The human genome project was an international effort to completely map the all of the genes of humans. The first information on the human genome generated from this endeavor was published in 2000 and the full sequence was published in 2003. Since then, estimates of the rumber of genes in the human genome have steadily declined, and it is now though that there are about 20,500 genes in the human genome, but the exact number is yet to be determined. Since we have known the sequence of the human genome for almost two decades, why are scientists still not sure of the total number of genes contained within the human genome? In other words, why is it taking so long to determine the number of genes humans have?arrow_forwardDescribe the components of the human genome. proper explanation and diagramarrow_forwardDNA sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find that some regions of the human genome that are most highly conserved (similar to comparable regions in other species) don't code for proteins at all. Given what you've learned about "genes" speculate on reasons why this might be so.arrow_forward
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