Evidence of Evolution

Front

Some organisms that share a common ancestor have similar structures with different functions. These are known as

Back

homologous structures.

Front

The diagram illustrates an embryonic stage of two organisms. Which of the following can be determined by observing the embryos shown in the diagram?

Back

The organisms share a common ancestry.

Front

Vestigial structures

Back

remnants of once-important structures that have slowly lost all or most of their function.

Front

Butterfly wings and bat wings are examples of

Back

analogous structures.

Front

Which of the following statements is true about the hip bones of a whale?

• The bones are analogous structures to the fins of living fish.
• The bones are vestigial structures that had a function in an ancestor on land.
• The bones are homologous structures to the wings of butterflies.

Back

The bones are vestigial structures that had a function in an ancestor on land.

Front

Which layer is the youngest? Options: 1, 2, 3, 4

Back

1

Front

If two organisms have similar DNA sequences, they probably

Back

are closely related and share a common ancestor.

Front

According to this data, the unknown bacterial species is most closely related to: Species I, Species II, Species III, Species IV

Back

Species IV

Front

Similarities in bone arrangements, like those in the picture, support the hypothesis that

Back

these organisms share a common ancestor.

Front

Which species’ DNA is most similar to the DNA of the toothed whale? Options: Hippopotamus, Baleen whale, Hoofed grazing mammals, Camels

Back

Baleen whale