Question

which kind of evidence studies mineralized bone, footprints, or organisms trapped in amber to determine common ancestry?
○ fossils
○ analogous structures
○ homologous structures
○ molecular clock

Explanation:

To determine the answer, we analyze each option:

• Fossils: Fossils include mineralized bones, footprints (trace fossils), and organisms trapped in amber (preserved fossils). They are used to study common ancestry by providing evidence of past organisms.
• Analogous structures: These are structures with similar functions but different evolutionary origins (e.g., bird wings and insect wings), not related to the evidence types mentioned.
• Homologous structures: These are structures with a common evolutionary origin but different functions (e.g., human arms and bat wings), not related to the evidence types here.
• Molecular clock: Uses DNA or protein sequences to estimate evolutionary time, not physical remains like fossils.

So the correct option is the one related to the physical remains (mineralized bone, footprints, organisms in amber) used for studying ancestry, which is fossils.

Answer:

A. fossils