Hello, I need help answering 5c & 5d using the phylogeny below(letter (A) graph to the left). Pls and thank you! a) In the 1990s, when only mitochondrial DNA sequencing was available, geneticists claimed that there was no hybridization between humans (Homo sapiens) and Neanderthals (Homo neanderthalensis). Does the phylogeny shown above support the claim humans did not hybridize with Neanderthals in the past? How can you tell? b) Once nuclear DNA sequencing became fast and able to handle sequencing ancient DNA, living humans were found to have some Neanderthal genes. Is this finding clear evidence that some early modern humans did indeed hybridize with Neanderthals? Why? c) Did female H. sapiens hybridize with Neanderthal males to produce fertile offspring that then back-crossed with modern humans? What does the graph say about this? d) Did male H. sapiens hybridize with Neanderthal females that then back-crossed with modern humans? What does the graph say about this? Photo reference: Futuyma, D. J. (2017). Chapter 21 Evolution and Homo sapiens. In 1364598148 998145751 M. Kirkpatrick (Ed.), Evolution (4th ed., pp. 545-570). Sunderland, Massachusetts: Sinauer Associates.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
icon
Related questions
Question
Hello, I need help answering 5c & 5d using the phylogeny below(letter (A) graph to the left). Pls and thank you! a) In the 1990s, when only mitochondrial DNA sequencing was available, geneticists claimed that there was no hybridization between humans (Homo sapiens) and Neanderthals (Homo neanderthalensis). Does the phylogeny shown above support the claim humans did not hybridize with Neanderthals in the past? How can you tell? b) Once nuclear DNA sequencing became fast and able to handle sequencing ancient DNA, living humans were found to have some Neanderthal genes. Is this finding clear evidence that some early modern humans did indeed hybridize with Neanderthals? Why? c) Did female H. sapiens hybridize with Neanderthal males to produce fertile offspring that then back-crossed with modern humans? What does the graph say about this? d) Did male H. sapiens hybridize with Neanderthal females that then back-crossed with modern humans? What does the graph say about this? Photo reference: Futuyma, D. J. (2017). Chapter 21 Evolution and Homo sapiens. In 1364598148 998145751 M. Kirkpatrick (Ed.), Evolution (4th ed., pp. 545-570). Sunderland, Massachusetts: Sinauer Associates.
(A)
(B)
Australian
FIGURE 2113 Mitochondrial gene
trees reveal relations among humans
and closely related species. (A) A gene
tree based on the mtDNA from living
humans, Neanderthal fossils, chimpan-
zees, and bonobos. The similarity of se-
quences from Neanderthals and living
humans is a dramatic confirmation of
the conclusion made earlier from fossils
that the two lineages are very closely
related. In this tree, the lengths of
branches are proportional to the num-
ber of changes in the DNA sequences.
(B) A gene tree of mtDNA from living
humans shows that its deepest branch-
es are found in Africa, corresponding to
where our species originated. All non-
African lineages are descendants of a
single ancestral mtDNA that left Africa
about 60 Kya. The shallower branches
connecting all non-African lineages
indicate that they are more recently
diverged than lineages in Africa. (A after
[5], B after [33].)
Bonobos
Pima (No. American)
Papua New Guinea highland
Georgian
Uzbek (central Asian)
Chimpanzees
Living
humans
Crimean Tatar
French
English
Non-African
Korean
Neanderthals
Chinese
Asian Indian
Khirgiz (central Asian)
Warao (So. American)
Siberian Inuit
African
Guarani (So. American)
Japanese
Mkamba
Ewondo
Lisongo
Yoruba
Mandenka
Effik
Ibo
Mbenzele
Biaka
Mbenzele
Kikuyu
Hausa
Mbuti
San
Transcribed Image Text:(A) (B) Australian FIGURE 2113 Mitochondrial gene trees reveal relations among humans and closely related species. (A) A gene tree based on the mtDNA from living humans, Neanderthal fossils, chimpan- zees, and bonobos. The similarity of se- quences from Neanderthals and living humans is a dramatic confirmation of the conclusion made earlier from fossils that the two lineages are very closely related. In this tree, the lengths of branches are proportional to the num- ber of changes in the DNA sequences. (B) A gene tree of mtDNA from living humans shows that its deepest branch- es are found in Africa, corresponding to where our species originated. All non- African lineages are descendants of a single ancestral mtDNA that left Africa about 60 Kya. The shallower branches connecting all non-African lineages indicate that they are more recently diverged than lineages in Africa. (A after [5], B after [33].) Bonobos Pima (No. American) Papua New Guinea highland Georgian Uzbek (central Asian) Chimpanzees Living humans Crimean Tatar French English Non-African Korean Neanderthals Chinese Asian Indian Khirgiz (central Asian) Warao (So. American) Siberian Inuit African Guarani (So. American) Japanese Mkamba Ewondo Lisongo Yoruba Mandenka Effik Ibo Mbenzele Biaka Mbenzele Kikuyu Hausa Mbuti San
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Human evolution
Learn more about
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education