Some mutations have no effect on the organism and are therefore considered neutral
A. true
B. false
A
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Which of the following can function in signal transduction in plants?
I) calcium ions II) nonrandom mutations III) receptor proteins IV) autochrome V) secondary messengers A) only I, III, and IV B) only I, II, and V C) only I, III, and V D) only II and IV E) only II, III, and V
For most purposes of studying bacterial isolates, viable counting usually gives accurate information about the number of active cells present in a culture volume
Indicate whether the statement is true or false.
Individuals with an XXY karyotype are ________ in humans and ________ in fruit flies.
A) male; male B) male; female C) female; male D) female; female E) male; intersexual
Multi-cellularity is believed to have evolved multiple times on Earth
Indicate whether the statement is true or false.