Mitochondrial DNA evidence has shown that____. a. the greatest diversity of mtDNA is in European peoples, suggesting they share a more recent origin b. the least diversity of mtDNA is in African peoples, suggesting Old World peoples share a more ancient origin c. the greatest diversity of mtDNA is in African peoples, suggesting they share a more ancient origin d. the least diversity of mtDNA is in European peoples, suggesting they share a more ancient origin

Mitochondrial DNA evidence has shown that____. a. the greatest diversity of mtDNA is in European peoples, suggesting they share a more recent origin b. the least diversity of mtDNA is in African peoples, suggesting Old World peoples share a more ancient origin c. the greatest diversity of mtDNA is in African peoples, suggesting they share a more ancient origin d. the least diversity of mtDNA is in European peoples, suggesting they share a more ancient origin

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter18: Organizing Information About Species

Section: Chapter Questions

Problem 13SQ: All of the following data types can be used as evidence of shared ancestry except similarities in...

See similar textbooks

Similar questions

. DNA sequences in many human genes are very similar to thesequences of corresponding genes in chimpanzees. The mostlikely explanation for this result is that(A) humans and chimpanzees share a relatively recent common ancestor.(B) humans evolved from chimpanzees.(C) chimpanzees evolved from humans.(D) convergent evolution led to the DNA similarities.
Tiny foxes live on the Channel Islands off the coastof Southern California; the adults weigh less than3 lbs. These so-called island foxes (Urocyon littoralis) derived from the mainland gray fox (Urocyoncinereoargenteus). Analysis of genome sequencesrevealed that unlike the mainland foxes, the foxeson a single island have shockingly little geneticdiversity.a. The genome of only one fox from each island wassequenced. How would the lack of genetic diversitybe evident in a single genome sequence?b. The populations of the foxes on each island aresmall. How might the low diversity have occurred?c. Why is low genetic diversity thought to lead tospecies extinction?d. Hypothesize as to why the Channel Island foxesare thriving without human assistance despite theirlack of genome sequence diversity
Mitochondrial DNA sequences are often used to study a relationship between______ . a. different species b. individuals of the same species c. different taxa d. evolutionary structures e. homologous structures
Advances in biotechnology have revolutionized the study of ancient remains. In Ötzi's case, a genetic study showed that his DNA most closely matched up with people that currently live in Sardinia. One hypothesis for this is that at Ötzi's time, a group of people with similar DNA spread throughout Europe including Sardinia. Sardinia is somewhat isolated so the DNA of the population living there has changed very little since that time. On mainland Europe, where his remains were found, there was more mixing of populations so there have been changes to the DNA profiles of the people living in that region. Questions: 1.) Based on the genetic results, do you think Ötzi should be considered Sardinian even though he lived in the Alps? Why or why not?
Why can’t scientists just do DNA analysis on these fossil hominins to determine if they are a separate species and possibly what species they belong to? A. The DNA of fossil hominins is too similar to modern humans, making it difficult to distinguish between them. B. The technology for extracting DNA from fossils hasn't been developed yet. C. The fossils would need to be in a -5 degree Celsius environment to prevent DNA from degrading D. Scientists can't perform DNA analysis on fossil hominins because the fossils have been contaminated with modern human DNA over the years, making it impossible to isolate the ancient genetic material.
In 1979, bones found outside Ekaterinburg, Russia, were shown to be those of Tsar Nicholas and his family, who were executed in 1918 by a Bolshevik firing squad in the Russian Revolution . To prove that the skeletons were those of the royal family, mtDNA was extracted from the bone samples, amplified by PCR, and compared with mtDNA from living relatives of the tsar’s family. Q. Mitochondrial DNA from which living relatives would provide useful information for verifying that the skeletons were those of the royal family?
A shared derived character is a. derived from an ancestral character. b. more recently developed than an ancestral character. c. found in all or most of the members of an ingroup. d. all of the above.
Denisovans 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.
The neutral theory of molecular evolution is now accepted as part of the theory of evolution by natural selection. a)True b)False
Using the picture below of the triangles and pentagon answer this question: 2.a) Identify potential Synapomorphies aka "Shared Derived Characters": To pick informative characters, look for things that are shared between two or more members of the ingroup. Give a DETAILED description of each of the characters you are going to use. This is important, as often two characters are very similar (see example on the next page). Remember, they should be binary (i.e., one of two states--black or white, two eyes or four eyes). They should not be subjective (i.e., long vs. short). You can always identify the ancestral state of your character by asking if the outgroup shows the character of interest. Answer this completely and correctly. Do not use previous answers/versions of answers.
Which of the following statements best explains the importance of sister taxa for understanding the evolution of ingroup taxa? A) The sister group informs of the likely state of the common ancestor of the ingroup. B) The sister group is composed only of ancestral characters representing a primitive taxon having ancestral states for all characters able to be studied. C) The sister group allows us to infer character state polarity in order to understand how character states have changed during evolution of the ingroup. D) A & B E) A& C F) All of the above.
77: The Most Recent Common Ancestor (MRCA) is an individual who donated DNA to every single living person, meaning we are all related to each other through him/her. Which statement best describes the human MRCA based on mitochondrial evidence? Group of answer choices A: A woman who lived in Siberia 40-50,000 years ago B: A woman who lived in Africa 200,000 to 300,000 years ago C: This person was the only human alive at some point D: The very first member of our species