Αποτελέσματα Αναζήτησης
Color code each of the bones according to this key: For each animal, indicate what type of movement each limb is responsible for. Compare the skeletal structure of each limb to the human arm. Relate the differences you see in form to the differences in function.
OBJECTIVES: In this lab you will learn about homologous, analogous, and vestigial structures and their significance in evolution theory. MATERIALS: Colored pencils and worksheet. PROCEDURES AND OBSERVATIONS: PART I. HOMOLOGOUS STRUCTURES (definition): ________________________________.
Vestigial structures are anatomical remnants that were important in the organism’s ancestors, but are no longer used in the same way. 3. Give an example of a vestigial structure from this activity: 4. Below are some vestigial structures found in humans. For each, hypothesize what its function may have been. Structure Possible function?
Vestigial Structures Many organisms possess vestigial structures that have no apparent function, but that resemble structures their presumed ancestors had. Natural selection explains why some animals have leftover body structures that aren't still needed. These structures are called vestigial structures. Some of these are:
Organs or structures that lost their function in the organism and become reduced in size (because of efficiency) are called vestigial structures . Human vestigial organs are well documented.
Color code each of the bones according to this key: For each animal, indicate what type of movement each limb is responsible for. Compare the skeletal structure of each limb to the human arm. Relate the differences you see in form to the differences in function.
Structures that have lost their use through evolution are called vestigial structures. They provide evidence for evolution because they suggest that an organism changed from using the structure to not
