The Cave Bear and the American Giant Short-faced Bear are both extinct. All the other species are extant. Plio = Pliocene, Plei = Pleistocene, and Hol = Holocene. Figure 1: t₁ MP-MLU-MLp-Bayesian 14.32 t. 1977-16581 node 95% CI 35.7 mean age (Ma) Epochs Eocene Oligocene 100-100-100-1.00 12.86 19.09 ta (14.38-24.79) t [9.77-16.58] Miocene 100-100-100-1.00 5.39 85-93-93-1.00 5.05 100-100-100-1.00 0.88 t10.66-1.17] ta 14.2-6.861 2.75 polar bear to 12.1-3.57) ts 13.9-6.481 99-97-94-1.00 to 4.08 t10 76-94-97-1.00 4.58 100-100-100-1.00 5.66 (3.11-5.27) ta (3.51-5.89) -sloth bear (4.26-7.34) -brown bear 100-100-100-1.00 Plio Plei -cave bear -Asian black bear American black bear -sun bear -American gian short-faced be -spectacled bear -giant panda -harbor seal Global expansion of C4 biomass Major temperature drop and increasing seasonality Faunal turnover Hol

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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a) Is Figure 1 a cladogram, phylogram, or chronogram?

b) According to Figure 1, all bears share a common ancestor with what group of mammals?

c) What pair of bear species diverged most recently?

d) The ancestor of what species of bear diverged the earliest from the ancestor of all other bears?

The Cave Bear and the American Giant Short-faced Bear are both extinct. All the other species
are extant. Plio = Pliocene, Plei = Pleistocene, and Hol = Holocene.
Figure 1:
t₁
MP-MLU-MLp-Bayesian 14.32
tx 1977-16581
node 95% CI
35.7
mean age (Ma)
Epochs Eocene
Ma
34
Oligocene
23.8
100-100-100-1.00 12.86
19.09
ta[14.38-24.79]
t[9.77-16.58)
Miocene
100-100-100-1.00
100-100-100-1.00 5.39
0.88
t10.66-1.17]
ta 14.2-6.861 2.75 polar bear
to (2.1-3.57)
85-93-93-1.00 5.05
ts 13.9-6.481
99-97-94-1.00 to 4.08
76-94-97-1.00
100-100-100-1.00 5.66
[3.11-5.27)
4.58
ta (3.51-5.89)
sloth bear
t10 (4.26-7.34)
-brown bear
100-100-100-1.00
-cave bear
-Asian
black bear
American
black bear
-sun bear
-American giant
short-faced bear
-spectacled
bear
-giant pandal
-harbor seal
Global expansion of C4 biomass
Major temperature drop and increasing seasonality
Faunal turnover
Plio Plei Hol
5.3 1.8 0.01
Transcribed Image Text:The Cave Bear and the American Giant Short-faced Bear are both extinct. All the other species are extant. Plio = Pliocene, Plei = Pleistocene, and Hol = Holocene. Figure 1: t₁ MP-MLU-MLp-Bayesian 14.32 tx 1977-16581 node 95% CI 35.7 mean age (Ma) Epochs Eocene Ma 34 Oligocene 23.8 100-100-100-1.00 12.86 19.09 ta[14.38-24.79] t[9.77-16.58) Miocene 100-100-100-1.00 100-100-100-1.00 5.39 0.88 t10.66-1.17] ta 14.2-6.861 2.75 polar bear to (2.1-3.57) 85-93-93-1.00 5.05 ts 13.9-6.481 99-97-94-1.00 to 4.08 76-94-97-1.00 100-100-100-1.00 5.66 [3.11-5.27) 4.58 ta (3.51-5.89) sloth bear t10 (4.26-7.34) -brown bear 100-100-100-1.00 -cave bear -Asian black bear American black bear -sun bear -American giant short-faced bear -spectacled bear -giant pandal -harbor seal Global expansion of C4 biomass Major temperature drop and increasing seasonality Faunal turnover Plio Plei Hol 5.3 1.8 0.01
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