Released STAAR Biology EOC · 2025 · Item 32 · 1 point

Walkthrough: Biology 2025, Item 32

B.9A · Evolution & Natural Selection · unscored study

A world map marks six flightless-bird locations: 1 in northwest Africa, 2 in south Asia, 3 in central Africa, 4 and 5 in South America, and 6 in southern Africa. Curved lines indicate geographical barriers. — Geographical distribution of flightless birdsOriginal visual from the released STAAR test.

The geographical distribution of flightless birds is shown on the map. Which locations MOST LIKELY share a most recent common ancestor with the birds found at Location 3?

Response format: select 2 locations on the figure.

1. Understand the question

Populations close together, with no geographical barrier between them, are most likely to share a recent common ancestor.

Try the question on your own first, then reveal one step at a time.

2. Solve it step by step

Practice released items for this skill Back to the lesson

Question, artwork, answer key and rationale: Texas Education Agency released STAAR test. Walkthrough steps written by TEKSForge. Studying here does not change your mastery or scores.