Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 19, Problem 23QP
The Evolutionary History and Spread of Our Species (Homo sapiens)
- a. Briefly describe the two major theories discussed in this chapter about the origin of modern humans.
- b. Which of these two theories would predict a closer relationship for the various modern human populations?
- c. Which of the two theories is best supported by the genetic evidence?
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According to "Our Earliest Ancestors", 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 technology for extracting DNA from fossils hasn't been developed yet.
B.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.
C.The fossils would need to be in a -5 degree Celsius environment to prevent DNA from degrading
D.The DNA of fossil hominins is too similar to modern humans, making it difficult to distinguish between them.
The Neanderthal nuclear genome:
A. Shows that Neanderthals inherited their ability to flake stone directly from Homo habilis.
B. Is overwhelmingly similar to the modern human genome.
C. Demonstrates once and for all that Neanderthals had language.
D. Is composed exclusively of mitochondrial DNA.
E. Indicates that most Neanderthal females died young, which explains why Neanderthal populations were so small.
According to "Our Earliest Ancestors", 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 fossils would need to be in a -5 degree Celsius environment to prevent DNA from degrading
B.The DNA of fossil hominins is too similar to modern humans, making it difficult to distinguish between them.
C.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.
D.The technology for extracting DNA from fossils hasn't been developed yet
Chapter 19 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 19.8 - Why dont genetic markers on the Y chromosome...Ch. 19.8 - Prob. 2GRCh. 19 - If you suspected that heterozygous carriers of a...Ch. 19 - If allele frequencies in the hemoglobin gene are...Ch. 19 - Prob. 1QPCh. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - Prob. 4QPCh. 19 - Prob. 5QPCh. 19 - How Can We Measure Allele Frequencies in...
Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - Using the HardyWeinberg Law in Human Genetics...Ch. 19 - Prob. 10QPCh. 19 - Using the HardyWeinberg Law in Human Genetics In a...Ch. 19 - Prob. 12QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Prob. 15QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Prob. 17QPCh. 19 - Prob. 18QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Natural Selection Affects the Frequency of Genetic...Ch. 19 - Prob. 21QPCh. 19 - Prob. 22QPCh. 19 - The Evolutionary History and Spread of Our Species...Ch. 19 - Prob. 24QPCh. 19 - Genomics and Human Evolution The Denisovan genome...
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- 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.arrow_forwardA. Sex” refers to the observable physical characteristics that distinguish two kinds of humans, females and males. Select one: True False B. Palaeoanthropologists are biological anthropologists who study a. biological variation in living human populations. b. the fossils and remains of ancient human ancestors. c. human evolution using mitochondrial DNA. d. the material remnants of early human societies.arrow_forwardPlease help with the following: There are a number of evolutionary hypotheses that researchers have developed to better understand the high prevalence of complex diseases like type 2 diabetes and obesity across populations today. The best explanation for this high prevalence of complex diseases is: A. Speakman's hypothesis B. Meyer’s gene hypothesis C. Thrifty gene hypothesis D. Drifty gene hypothesis E. Neel's hypothesisarrow_forward
- According to "Homo naledi – New Questions on Human Evolution ", what ARE possible explanations for how these individuals got into the cave? A.There was a massacre B.The Homo naledi individuals lived in the cave and died there C.The bodies were deliberately disposed in the cave by other Homo naledi individuals or other hominins D.The Homo naledi individuals went into the cave to hunt animalsarrow_forwardAccording to "Homo naledi – New Questions on Human Evolution ", why was it significant that the bones were found to be articulated (their bones hadn’t separated from each other)? A.The individuals arrived in the cave either alive or shortly after the died. B.The individuals had decomposed outside of the cave, and other Homo naledi individuals put their skeletons together inside the cave. C.The bodies must have been placed in bags or coffins to keep the skeleton together as the body degraded. D.None of these are correctarrow_forwarda. What did Darwin's travels reveal to him about the number and variety of living species? b. How did tortoises and birds differ among the islands of the Galapagos? c. What is evolution? Why is referred to as a theory? d. Darwin found fossils of many organisms that were different from any living species. How would this finding has affecting his understanding of lifes diversity?arrow_forward
- You are reading a scientific paper regarding the relationships of the anatomical and behavioral characteristics of chimpanzees and their implications for early hominid evolution. With the emphasis on anatomical and behavioral characteristics, this implies that the researchers are relying on A. Traditional classifications of chimpanzees and humans B. Nonevolutionary classifications of chimpanzees and humans C. An incorrect classification of human ancestors D. Cladistic classifications of chimpanzees and humansarrow_forwardThe cladistic classification of apes and humans A. Divides hominids into hylobatids, pongids, and hominids B. Includes tarsiers, lemurs, and lorises C. Uses the term hominid to describe only humans and their ancestors D. Includes three subfamilies within hominids: Ponginae, Gorillinae, and Hominiaearrow_forward1) Describe the issues raised by the discoveries of Homo naledi and Homo floresiensis in understanding the story of the evolution of Homo sapiens? Please Answer correctly & with detailed step-by-step explanation needed... Please i need unique definitions ADD CONCLUSION AT END.... THANKSarrow_forward
- Answer the following questions correctly 2-3 sentences only ( This is all about Development of Evolutionary Thought). a. What did Darwin's travels reveal to him about the number and variety of living species? b. How did tortoises and birds differ among the islands of the Galapagos? c. What is evolution? Why is referred to as a theory? d. Darwin found fossils of many organisms that were different from any living species. How would this finding has affecting his understanding of lifes diversity?arrow_forward1a. Discuss the role of Gene Flow in evolution 1b. Explain how Natural Selection operates to bring about evolutionary change 1c. Explain the attributes of the Biological Species that ensure that different species do not interbreed. Your essay including references must not exceed 3 pagesarrow_forwardAccording to "Homo naledi – New Questions on Human Evolution ", where was Homo naledi found and how many individuals were found there? A.South Africa and 2 individuals B.Kenya and 2 individuals C.South Africa and 15 individuals D.Kenya and 15 individualsarrow_forward
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