HUMAN BIOLOGY

Genes and disease: CanCer 435 hoW is cancer treated? Surgery, chemotherapy, radiation, and other treatment strategies are used ...

436 Chapter 22 expLoreon your own summary section 22.1 Overgrowing cells lead to a tissue mass called a tumor. In dysplasia, a c ...

Genes and disease: CanCer 437 seLf-Quiz Answers in Appendix VI A tumor is. a. malignant by definition b. always enclosed by con ...

438 Chapter 22 In 2009 the World Health Organization (WHO) reported that people under age 30 who regularly use tanning beds incr ...

This chapter returns to the evolution of life on Earth (1.2). The discussion in Chapter 1 of the use of the term theory in scien ...

What is biological evolution? In biology, evolution is genetic change in a line of descent through successive generations. Comb ...

prinCiples of evolution 441 What causes evolution? Evolution results from changes in the genetic makeup of populations of organ ...

442 Chapter 23 different versions of a trait. The “fittest” traits—and the gene alleles that govern them—are more likely to be “ ...

prinCiples of evolution 443 hoW does a neW species come about? New species can arise as the result of the accumulation of genet ...

444 Chapter 23 are broken, crushed, deformed, or swept away by erosion, rock slides, and other geologic events. Fossil-containin ...

prinCiples of evolution 445 hoW do fossils and biogeography contribute to our knoWledge of evolution? Fossils and biogeography ...

446 Chapter 23 n Comparing stages of development in major groups of organisms can shed light on evolutionary history. Comparing ...

prinCiples of evolution 447 hoW does the study of patterns of body form help our understanding of evolution? Comparing the patt ...

448 Chapter 23 How species Come and go Comparing genes Figure 23.11 Comparing the structure of an amino acid in different organi ...

prinCiples of evolution 449 hoW do extinction and the rise of neW species fit into the history of life on earth? Extinction and ...

450 Chapter 23 Tarsiers New World monkeys Old World monkeys Gibbons Orangutans Gorillas Humans Lemurs, lorises, galagos Chimpanz ...

prInCIpLes OF eVOLutIOn 451 What trends marked the evolution of humans? Trends associated with the evolution of humans include ...

452 Chapter 23 ancestors of humans were becoming distinct from the apes (Figure  23.17A). By 3.9 million years ago a clearly bip ...

prinCiples of evolution 453 A B Equinox Graphics/ Science Source © Frank Vincken, Courtesy of Max Planck Institute for Evolution ...

454 Chapter 23 The foregoing events were crucial to the beginning of life. Without an oxygen-free atmosphere, the organic compou ...