The above figure demonstrates
a. imprinting behavior.
b. displaying instinctive behavior.
c. feeding a social parasite.
d. a learned behavior.
e. all of these.
Answer: b
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The virus repressor protein provides immunity to infection by the same type of virus
Indicate whether the statement is true or false.
Choose the true statements about the evolution of flower symmetry.
_____ Some radially symmetric flowers have ancestors with bilaterally symmetric flowers. _____ Having radially symmetric flowers is ancestral to having bilaterally symmetric flowers. _____ All cases of flowers with bilateral symmetry involve the CYCLOIDIA (CYC) gene. _____ Bilateral symmetry in some flowers is a homoplastic character derived through convergent evolution.
How do negative regulators such as the Lac repressor prevent RNA polymerase from initiating transcription?
A) by blocking the ribosome binding site B) by forming a loop in the operator that restricts the passage of the polymerase C) by physically blocking the DNA binding site of RNA polymerase D) by binding to the polymerase to inhibit its catalytic activity
Habitat corridors allow animals to move from one habitat fragment to another
___________________ Indicate whether the statement is true or false.