Topics: Ecology Quiz
Ostrich wings are examples of
A. homologous structures
B. vestigial structures
C. adaptations
D. traits
Select your answer:

Topics:
Respiration Trauma Surgery The Cell Cycle Histology HS Deficiency Disease DNA Structure, Replication, Proteins Muscular EMS Systems Health Unit Coordinating Human Organs Diversity Pathophysiology_Endocrine Herd Immunity The Teeth EarsOther quiz:
Skeletal System › ViewWhat does our skeleton help us do?
A. Move
B. Think
C. Sleep
D. None of these
DNA, RNA, Proteins › View
How many strands does RNA have?
A. One
B. Two
C. Three
D. Four