Mammals are thought to have evolved from
A. dinosaurs.
B. marsupials.
C. archosaurs.
D. therapsids.
E. thecodonts.
Answer: D
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The figure above represents analysis of blood from a victim of a crime and from two suspects. Criminologists created this Southern blot using restriction fragments from a VNTR site. Which suspect is definitely innocent?
A. suspect 1 B. suspect 2 C. both D. neither
Increased concentrations of carbon dioxide (CO2) (5% to 10%) and approximately 15% oxygen (O2) produce an environmental condition that best suits which type of organism?
a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles
Some plants require water for reproduction. This is because
a. it is needed for germination of the spores. b. the eggs would dry out otherwise. c. the sperm are motile and need to swim to the egg to accomplish fertilization. d. the plants must be actively growing in order to reproduce. e. the seeds will be carried on the water to new sites.
Briefly explain the formation of bone in the human body
What will be an ideal response?