Question

chp 13.3
which of the following do some scientists believe shows evidence for evolution in ng species?
embryology
all of the choices
vestigial structures
homologous structures

Explanation:

To determine the answer, we analyze each option:

• Embryology: Similarities in embryonic development across species (e.g., vertebrate embryos having similar early stages) suggest common ancestry, supporting evolution.
• Vestigial structures: Organs or structures (e.g., human appendix) that have lost original function in a species but are functional in related species indicate evolutionary change (ancestors used them, and they became reduced over time).
• Homologous structures: Structures with similar anatomy but different functions (e.g., human arm vs. bat wing) suggest common evolutionary origins (divergent evolution from a shared ancestor).

Since all three (embryology, vestigial structures, homologous structures) are recognized as evidence for evolution, the correct choice is "all of the choices."

Answer:

B. all of the choices (assuming the option label for "all of the choices" is B; adjust label if needed, but the content is "all of the choices").