Biology Now, 2e

306 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY Figure 17.5 Segmentation in animals Segmentation, a body plan in which ...

Neanderthal Sex ■ 307 Making up the third category, monotremes are egg-laying mammals that lack a placenta alto- gether. The onl ...

308 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY 65 mya 45 mya 35 mya 12–16 mya 7–8 mya 5–7 mya Old World Orangutans mo ...

Because of a shared common ancestor 1.6 billion years ago, humans share DNA with all animals, plants, and fungi. But how much? T ...

310 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY Pelvis The face is relatively flat. The spinal cord enters from the ce ...

Neanderthal Sex ■ 311 two legs (Figure 17.8). Many skeletal changes accompanied the switch to walking upright, including the los ...

312 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY four Neanderthal fossils in 2004) was compared to modern human mitocho ...

Neanderthal Sex ■ 313 Svante Pääbo is a Swedish geneticist who directs the Department of Genetics at the Max Planck Institute fo ...

314 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY 4 percent. Most of us have a little Neanderthal in us. But whether tha ...

Neanderthal Sex ■ 315 Who would that ancestor have been? The oldest Homo fossil fragments were found in Ethiopia in 2015 and dat ...

316 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY research and evidence will be necessary before general agreement is re ...

Neanderthal Sex ■ 317 According to the out-of-Africa hypothesis, anatomically modern humans first evolved in Africa about 195,00 ...

318 ■ CHAPTER 17 Animals and Human Evolution BIODIVERSITY Italy. During this period, it’s possible that “there was a kind of int ...

Neanderthal Sex ■ 319 Figure 17.16 Neanderthal-human hybrid Paleontological reconstruction of a Neanderthal-human hybrid. the ja ...

320 ■ CHAPTER 17 Animals and Human Evolution REVIEWING THE SCIENCE THE QUESTIONS The Basics (^1) Which of the following statemen ...

Neanderthal Sex ■ 321 Challenge Yourself (^6) specimens have features that are intermediate between those of Australopithecus af ...

Amazon on Fire Can the world’s largest rainforest survive a vicious cycle of wildfires and climate change? ◆ (^) Define the bios ...

323 ECOLOGY 18 CHAPTER GENERAL PRINCIPLES OF ECOLOGY ...

324 ■ CHAPTER 18 General Principles of Ecology ECOLOGY F lames rise from the forest floor, licking at Jennifer Balch’s heels. Ba ...

Amazon on Fire ■ 325 Balch and other scientists have been inves- tigating whether it might be possible to inter- vene in that cy ...