Flowers that smell like rotten meat, dung or decaying matter are most likely pollinated by
a. moths.
b. butterflies.
c. hummingbirds.
d. bees.
e. flies.
E
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The pairing of chromosomes along their lengths, which is essential for crossing over, is referred to as
A. syngamy. B. synapsis. C. prophase. D. recombination. E. centromere.
Insertion of one nucleotide in a gene will lead to a frameshift mutation
A. true B. false
During a human pregnancy, implantation occurs at which stage?
a. zygote b. early cleavage c. blastocyst d. gastrula e. morula
You are explaining the biological basis of depression to a friend. The most accurate description is:
A. Depression stems from an irregularity in the production, release, reception, breakdown, or reuptake of neurotransmitters. B. Depression can be traced to myelin loss, which causes remarkable nerve dysfunction due to the slowing or blocking of nerve conduction. C. Depression is a cognitive disorder that involves a clinically significant deficit in cognition or memory that represents a marked change from a previous level of functioning. D. Depression is characterized by one or more symptoms of a physical dysfunction for which there is no identifiable organic cause.