Phorid flies lay their eggs inside the bodies of various insects and spiders. When the larvae hatch they consume the
body of the ‘host’ from the inside out. The phorid fly is an example of a ____.
a. brood parasite
b. parasitoid
c. commensalist
d. competitive excluder
e. mutualist
ANSWER: b
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Assembly of the T4 phage
A. may involve some self-assembly. B. may involve the use of scaffolds. C. is completely self-assembly. D. is completely dependent on scaffolds. E. may involve some self-assembly AND may involve the use of scaffolds.
The genome of an organism contains 30% adenine. Based on this, you would predict that this organism's genome also
contains 30% ____.
a. thymine b. cytosine c. each of cytosine and guanine d. each of thymine and guanine e. guanine
following a scent; others
are silent. Erect ears and barking are due to dominant alleles located on different chromosomes. A dog homozygous for both dominant traits is mated to a droopy-eared, silent follower. The phenotypic ratio expected in the F1 is a. 9:3:3:1. b. 100 percent of one phenotype. c. 1:1. d. 1:2:1. e. 3:1.
A compound is extracted from a microbial culture and is modified in the laboratory for use as an oral medication. This product would be a(n)
A) antibiotic. B) analog. C) semisynthetic antimicrobial. D) synthetic antimicrobial. E) probiotic.