BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Chapter 24, Problem 1U
Humans and pufferfish diverged from a common ancestor about 450 MYA, and these two genomes have
a. very few of the same genes in common.
b. all the same genes.
c. a large proportion of the genes in common.
d. no
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Students have asked these similar questions
Segmental duplications play an important role in evolution by
a. giving rise to new genes and multigene families.
b. keeping the number of genes in a genome constant.
c. eliminating repetitive sequences produced by transposition.
d. controlling the base content of the genome.
When the genomes of vertebrates are compared,a. genomes of closer relatives are more alike.b. genomes of closer relatives are less alike.c. genomic variation is essentially the same among relatives.d. genomes of more distant relatives are more alike.
Homologous genesa. are derived from the same ancestral gene.b. are likely to carry out the same or similar functions.c. have similar DNA sequences.d. exhibit all of the above features.
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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- What consequences does horizontal gene transfer pose for evolutionary biologists? a. It can pose difficulty in the reconstruction of phylogenetic trees, because it can obscure phylogenetic relationships. b. It can pose physiological problems in some organisms, making it very hard to study them. c. It can pose difficulty in breeding between different individuals of the same species. d. Because it is transfer of genes between the same species, it can make individuals look very more similar than they actually are. e. All of the above.arrow_forwardEvolutionary theory predicts that species are related, not independent. Four of the following examples provide support for this prediction, but one is irrelevant. Which of examples listed below does not support the claim that species are related? A. Many dinosaurs and other organisms went extinct following a huge asteroid impact at the end of the Cretaceous. B. Before synthetic insulin was available, diabetics used injections of purified pig insulin to manage their disease. C. The endostyle of lancelets (invertebrate chordates) and the thyroid gland of vertebrates develop similarly, and both produce iodinated proteins. D. All prokaryotes and eukaryotes use DNA to carry their genetic information. E. Ground squirrel species found on the North and South sides of the Grand Canyon are very similar to each other.arrow_forwardBy comparing DNA sequence of a specific gene, we can determine the evolutionary relationship of two organisms. Based on the sequence listed below, which two species would you expect to be more closely related? Organism No.1 with ATG CAA TAC GCC, organism No. 2 with ATG CAT GAC ACC and organims No. 3 with ATG CAT TAC GCC A. Organims No.2 and No.3 are likely more closely related. b.Organims No.1 and No.2 are likely more closely related. c.Organims No 1 and No.3 are likely more closely related.arrow_forward
- Scientists conducted research to examine the evolutionary relationship between 10 bird species and an alligator species. They isolated the amounts of the dinucleotides cytosine and guanine found in the genomic DNA of each species. The graph shows the traditional taxonomic groups of the bird species used and the average percentage of dinucleotides in their DNA. Which of the following statements is best supported by the DNA evidence? A - Gamebirds likely evolved after non-perching birds. B - A bird’s ability to fly may be linked to its dinucleotide percentage. C - The dinucleotide percentages demonstrate coevolution of all species. D - Non-perching birds are more similar genetically to alligators than flightless birds.arrow_forwardDenisovans are ancient humans. What would you least expect? A. They would have a larger brain than H. floresiensis. B. Fusion of chromosome 2a and 2b would not have occurred. C. Their mtDNA would show more similarity to Neanderthals than to H. sapiens. D. They probably did not have a spoken language. E. There would be evidence of them interbreeding with Homo sapiens and Neanderthals.arrow_forwardConsider all of the species on earth. Some scientists believe that the genes for growth and reproduction have been under evolutionary forces for longer than those involved in maintenance and repair. Which statement below best supports their theory? a. Most species die after producing offspring. b. “Survival of the fittest” is true. c. Most animal species mate for life. d. Only the more intelligent organisms live long lives.arrow_forward
- 2a)An ancient gene underwent duplication during the course of evolution to yield two chain genes designated as δ and ε genes. What is the name of A,B,C and the contrast between B and C.arrow_forwardIf a scientist discovers a new monkey in Paraguay, its genome will probably be MOST similar to that of A. a clam. B. a leech. C. a gorilla. D. a fruit fly.arrow_forwardThe hoof of a horse and the claw of a cat are found to both form due to the expression of the same gene in both species. This suggests that the two structures are…? Group of answer choices a. homologous b. identical c. have nothing to do with one another d. the result of convergent evolutionarrow_forward
- Gene families arise in the human genome are thought to have risen from A. duplication followed by natural selection B. transformation like process C. none of the above D. selection leading to duplicationarrow_forwardWhat problems does horizontal gene transfer cause for evolutionary biologists? a. It can make the reconstruction of phylogenetic trees difficult because it can obscure phylogenetic relationships. b. It can cause physiological problems in some organisms, making it hard to study them. c. It can make breeding between different individuals of the same species difficult. d. Because it is the transfer of genes between the same species, it can make individuals look more similar than they actually are. e. All of the above.arrow_forwardWhen dark-colored mice from two different populations living hundreds of miles apart were examined, the mice looked nearly identical. Their dark color was caused by two different genes. What does this tell you? (Note: More all correct answer) Group of answer choices A. Dark fur color evolved independently on each lava flow. B. there are at least two genes involved in creating dark-colored mouse fur. C. Dark-colored fur evolved only once in rock pocket mice. D. Under similar conditions, natural selection can favor similar adaptations. E. Different mutations in two different genes cannot generate the same phenotype.arrow_forward
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