The European cuckoo's behavior as a "brood parasite" represents what type of behavior?
A. A response that is not a behavior
B. Instinctive behavior
C. Imprinting behavior
D. Learned behavior
E. A time-dependent form of learning
Answer: B
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The production of an RNA molecule from the information in a DNA template molecule is referred to as ____
Some help with this one, please?
Why do some single-celled eukaryotes occur primarily as haploid cells, whereas others occur primarily as diploid cells?
A. Only the eukaryotes that reproduce sexually will occur as diploid cells. B. Only the eukaryotes that reproduce sexually will occur as haploid cells. C. Only the eukaryotes that reproduce asexually will occur as diploid cells. D. Only the eukaryotes that reproduce asexually will occur as haploid cells. E. None of the answers options is correct.
What is the protein coat of a virus called?
a. envelope b. capsule c. capsid d. phage e. pilus
Guard cells are often associated with ____, special epidermal cells that provide a reservoir of water and ions
a. companion cells b. cuticle cells c. cork cells d. sclerenchyma cells e. subsidiary cells