Evidence of Evolution 31. A biologist analyzes the DNA sequences in three different primates. The biologist finds that primates "A" and "B" have almost exactly the same DNA sequences. The DNA sequences in primate "C" are significantly different from those of primate "A" and primate "B". Which of the following conclusions can be logically drawn from this information? A. All three primates appeared on Earth at about the same time B. Either primate "A" or primate "B" must be a direct ancestor of primate "C" C. Primates "A" and "B" are more closely related to each other than either is to primate "C" D. Primate "C" must have been the ancestor of both primate "A" and "B" Tail 32. Which of the following best explains how scientists are able to explain the presence of the femur and pelvis in a whale (refer to the image)? Backbone A. Humans evolved from whales B. The ancestors of whales once had femurs and pelvises Raza C. Whales will be able to walk on land in the future D. Whales need the femur and pelvis to swim Polvis Femur 33. Wings have evolved independently many times on earth. Bats, birds, and moths each use these structures. to fly but do not share a recent common ancestor. Which of the following are these structures referred to as? A. Analogous structures B. Homologous structures C. Vestigial structures
Evidence of Evolution 31. A biologist analyzes the DNA sequences in three different primates. The biologist finds that primates "A" and "B" have almost exactly the same DNA sequences. The DNA sequences in primate "C" are significantly different from those of primate "A" and primate "B". Which of the following conclusions can be logically drawn from this information? A. All three primates appeared on Earth at about the same time B. Either primate "A" or primate "B" must be a direct ancestor of primate "C" C. Primates "A" and "B" are more closely related to each other than either is to primate "C" D. Primate "C" must have been the ancestor of both primate "A" and "B" Tail 32. Which of the following best explains how scientists are able to explain the presence of the femur and pelvis in a whale (refer to the image)? Backbone A. Humans evolved from whales B. The ancestors of whales once had femurs and pelvises Raza C. Whales will be able to walk on land in the future D. Whales need the femur and pelvis to swim Polvis Femur 33. Wings have evolved independently many times on earth. Bats, birds, and moths each use these structures. to fly but do not share a recent common ancestor. Which of the following are these structures referred to as? A. Analogous structures B. Homologous structures C. Vestigial structures
Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter18: Introduction To Darwinian Evolution
Section: Chapter Questions
Problem 16TYU: INTERPRET DATA Which of the primates in Figure 18-18 is the most distantly related to humans?...
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Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
Question
32
Transcribed Image Text:Evidence of Evolution
31. A biologist analyzes the DNA sequences in three different primates. The biologist finds that primates "A"
and "B" have almost exactly the same DNA sequences. The DNA sequences in primate "C" are significantly
different from those of primate "A" and primate "B". Which of the following conclusions can be logically drawn
from this information?
A. All three primates appeared on Earth at about the same time
B. Either primate "A" or primate "B" must be a direct ancestor of primate "C"
C. Primates "A" and "B" are more closely related to each other than either is to primate "C"
D. Primate "C" must have been the ancestor of both primate "A" and "B"
Teil
32. Which of the following best explains how scientists are able to explain the
presence of the femur and pelvis in a whale (refer to the image)?
Backbone
A. Humans evolved from whales
B. The ancestors of whales once had femurs and pelvises
C. Whales will be able to walk on land in the future
440x3
D. Whales need the femur and pelvis to swim
Polvis
Femur
33. Wings have evolved independently many times on earth. Bats, birds, and moths each use these structures
to fly but do not share a recent common ancestor. Which of the following are these structures referred to as?
A. Analogous structures
B. Homologous structures
C.
Vestigial structures
34. The forelimbs of humans, horses, cats, and bats are considered to be modifications of anatomically similar
structures inherited from a common ancestor. Which of the following are these structures referred to as?
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