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AP® Biology

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Red Eyes

APBIO-WSEMQC

A student is comparing traits for five related bird species. She makes a chart and records data for four different traits. She then uses the chart to make a cladogram showing her hypothesized relationships among the species.

1 2 3 4 5
Head Size 20 cm 20 cm 20 cm 20 cm 20 cm
Beak Color Black Blue Blue Black Black
Eye Color Black Black Red Red Red
Eye Number 2 2 2 2 3

Created for Albert.io. Copyright 2016. All rights reserved.

What letter on the cladogram indicates the development of the red eye trait?

A

A

B

B

C

C

D

D