In a forest community, the layer in which most photosynthesis occurs is the
A) canopy.
B) midstory.
C) understory.
D) forest floor.
A
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Data from the Human Genome Project revealed that humans, considered among the most complex of all organisms, have fewer genes and less DNA than some "simpler" organisms. Explain how a species can be more complex than another even though it possesses fewer genes
What will be an ideal response?
Which of the following is (are) NOT trend(s) of
vertebrate evolution? a. conversion of the support for locomotion from the notochord to the vertebral column b. expansion of the nerve cord to form the brain and spinal cord c. changes in the respiratory system from gills to lungs with accompanying changes in the circulatory system d. the development of fewer, more efficient chambers in the heart e. modification of limbs for more efficient movement
Explain why identical twins are clones What will be an ideal response?
Which of the following statements characterizes the lytic cycle of a viral infection?
A) The cycle typically ends when the host bacterium divides. B) The cycle typically leads to the lysis of the host cell. C) The virus reproduces outside of the host cell. D) The viral genes typically remain inactive once they are inside the host cell.