Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 24, Problem 1A
Chimp and human DNA whole-genome sequences differ by about 1.23%. Determine which of the following explanations is most consistent is most consistent with the substantial differences in morphology and behavior between the two species.
a. It must be due largely to gene expression.
b. It must be due exclusively to environmental differences.
c. It cannot be explained with current genetic theory.
d. The different are caused by random effects during development.
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Students have asked these similar questions
The term "homoplasy" is most applicable to which of these features?
A) The legless condiion found in various types of lizards
B) The 5-digit condition of human hands and bat wings
C) The beta-hemoglobin genes of mice and of humans
D) The fur that covers Australian moles and North American moles
E) The basic skeletal features of dog forelims and cat forelimbs.
Based on these choices, I am torn between A) and D). Both represent situations of possible convergent evolution, but I feel like fur isn't too significant of a derived character compared to legless conditions. B) could also be the answer too, but the 5-digit condition seems like common ancestry/morphological similarities.
. In browsing through the chimpanzee genome, you findthat it has three homologs of a particular gene, whereashumans have only two.a. What are two alternative explanations for thisobservation?b. How could you distinguish between these twopossibilities?
A. What traits are controlled by the branching gene and fruitcase gene? And how were they determined to be major players in the development of maize?
B. Teosinte looks like a terrible plant to begin to domesticate for agricultural purposes. What hypothesis is put forth to explain farmers’ early interest in the plant?
C. Often successful domestication of a plant or animal is due to the fact that this involved just a few gene changes. In what situation can changes in just a few genes dramatically change an organism's entire appearance?
D. Who is Norman Borlaug?
Chapter 24 Solutions
Biology
Ch. 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...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Assume the common ancestor was non-venomous, had non-jointed limbs, antennae, and 10 legs. Assume that all evolutionary changes in these traits are shown. a) What traits does Species C have? b) What traits does species F have?arrow_forwardA. What is the wild progenitor of maize and where is it found? B. George Beadle concluded that this plant was the likely ancestor of maize (corn) even though the two plants appear very different. What evidence did Dr. Beadle collect that led to his conclusion? C. How long ago was maize domesticated and what evidence was utilized to determine this? D. Dr. Doebley and his team compared the DNA sequence of maize to that of a number of teosinte varieties from throughout Mexico. What did their analysis reveal?arrow_forwardChimpanzees and humans obviously look and act very differently, but their genomes are remarkably similar. What types of mechanisms could explain how small differences in genotype can result in such large differences in phenotype?arrow_forward
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- Why are homologous traits similar? A. they result from genetic and developmental similarities. B. they are epigenetic effects. C. they are derived from a common ancestor D. they result from convergent evolution E. they result because the environmental conditions of the ancestors were similar.arrow_forwardHumans carry a variety of non-functional genetic sequences, called processed pseudogenes, in their DNA. we can estimate how long ago these sequences first appeared in the genomes of our ancestors. In humans, processed pseudogenes include the three options below which would be the least widespread among other primate species a. alpha-enolase psi1 (11 million years old) b. AS PSI 7 (16 million years old) c. CALM II PSI3 (36 million years old)arrow_forwardFrom the results of the experiment , explain how we know that the kiwis are more closely related to the emu and cassowary than to the moas. Cite particular regions in the sequences that support your answer.arrow_forward
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