Colors are more difficult to see at low light levels because
A. rods require high light levels to function.
B. there is no color to light when it is at low light levels.
C. cones do not function at low light levels.
D. cones do not respond to different wavelengths of light.
C. cones do not function at low light levels.
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Many bacteria that were originally classified in the genus Streptococcus are now placed into two new genera, Enterococcus and Lactococcus.
Answer the following statement true (T) or false (F)
Which of the following was NOT one of Darwin’s
observations? a. Most individuals have an equal chance to survive and reproduce. b. Changes in populations are gradual and take place over long periods of time. c. Members of the same species may exhibit considerable variation. d. Some characteristics are heritable and passed on to offspring. e. Some characteristics afford their possessor a better chance of survival.
A(n) transposon is a DNA sequence that “jumps” into the middle of a gene
__________________ Indicate whether the statement is true or false.
The domesticated dog has 78 chromosomes in its somatic cells. How many autosomes do dogs have?
a) 78 b) 76 c) 39 d) 38