2 SEM CARDLESS ACC W/RAVEN TEXT
12th Edition
ISBN: 9781265810467
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 24, Problem 5U
All of the following are believed to contribute to genomic diversity among various species, except
a. gene duplication.
b. gene transcription.
c. lateral gene transfer.
d. chromosomal rearrangements.
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How 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 exons
What observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes?
Select the four correct statements.
a. DNA content and ploidy in various cell types( sperm and somatic cells) are related
b. DNA is found to be the only macromolecule in eukaryotes that has different subunits.
c. Gene transfer is a direct evidence as it has been facilitated by recombinant DNA techniques.
d. The correlation of the action and absorption spectra of ultraviolet light support the interpretation that DNA is a genetic material.
e. DNA is shown to be present in ribosomes, matrix, and nucleus, where genetic function is performed.
f. DNA is shown to be present in mitochondria, chloroplasts, and nucleus, where genetic function is performed.
Horizontal gene transfer is a process in which genetic material from an organism is
a. transferred from cell to cell.
b. transferred to its offspring.
c. transferred to another organism that is not the offspring of the first organism.
d. released into the environment.
Chapter 24 Solutions
2 SEM CARDLESS ACC W/RAVEN TEXT
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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- Define horizontal gene transfer. What problems does it cause for evolutionary biologists?arrow_forwardIn which of the following types of large-scale mutations would there be a loss of genetic information from a cell? a. translocation b. deletion c. inversion duplication e. both a. and b.arrow_forwardWhich of the following statements about genes is incorrect? Select one: O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. b. Genetic differences can result from changes in the DNA called mutations. O c. Genes correspond to segments of DNA. d. Under normal circumstances, each chromosome contains precisely one gene. e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.arrow_forward
- The above image compares portions of DNA containing globin genes from an ordinary bony fish and an icefish. The genes on the figure are aligned based on - A. the beginning sequence on the chromosome. B. a matching of intron sequences. C. homologous sequences. D. gene function.arrow_forwardCompare genome size, gene number, and gene density (a) in the threedomains and (b) among eukaryotes.arrow_forwardFossils found in strata reveal that Select one: O a. older strata carry fossils that differ greatly from living organisms unused body parts decrease in size O b. О с. O d. an innate drive increasing the complexity of life geologic changes occur quickly on Eartharrow_forward
- Homologous genes found in different species are called a. orthologs. c. analogs. b. paralogs. d. none of the above.arrow_forwardBased on the graph provided, draw a genetic map to indicate the order of genetic transfer and relative distance between the transferred genes.arrow_forwardMechanisms that make the bacterial chromosome morecompact includea. the formation of micro- and macrodomains.b. DNA supercoiling.c. crossing over.d. both a and b.arrow_forward
- What can cause a reduced genetic diversity and what can its effect on certain species?arrow_forwardExplain three general mechanisms for horizontal gene transfer.arrow_forwardThe origin of genes that have new functions often involves the divergence of gene duplicates.Duplicates can arise via several mechanisms. a. One mechanism of gene duplication is retrotransposition, the insertion into the genome of DNA produced by reverse transcription of a messenger RNA. These gene duplicates are often dead on arrival: they are pseudogenes as soon as they are formed. Why are such duplicates so often dead on arrival? b. A second mechanism of gene duplication occurs via unequal crossing over during meiosis. Gene duplicates formed this way are functional more often than when they arise by reverse transcription. Why is that? c. If a gene duplicate is initially functional, what are its possible ultimate fates? Which is most likely,and why?arrow_forward
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