The nerve net of Hydra:a

contains a central control organ and connected neurons.
b. sends electrical signals in only one direction.
c. allows the organism to respond to stimuli approaching from any direction.
d. produces a signal that intensifies as it radiates from its point of origin.
e. cannot coordinate the movement of all tentacles at once.


c

Biology & Microbiology

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A chromosome of genotype C D recombines with a homolog of genotype c d during meiosis when Spo11 produces a double-strand break between the two loci. If anticrossover helicase disentangles the invading strand, the likely outcome would be

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Many introduced species have deleterious effects on communities and ecosystems because ____

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Biology & Microbiology

The double helix structure describes the shape of ____

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Biology & Microbiology