The majority of mature, self-tolerant lymphocytes are found in
A. the MALT.
B. lymph nodes.
C. the thymus.
D. the spleen.
E. the tonsils.
Answer: A
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What phenomenon would violate the conditions for Hardy-Weinberg equilibrium?
A. The population is isolated from other populations. B. Females select males based on secondary sex traits. C. The population is large. D. No genotypes within the population have a reproductive advantage. E. Genetic drift within the population does not change allele frequencies.
The calyx is composed of
a. petals. b. sepals. c. stigmas. d. ovules. e. anthers
Bioinformatics provides database information to align proteins from novel sequences with known proteins. If a new amino acid sequence does not match an existing sequence ________.
A. it is called an paralogue; the DNA that codes the ORF does not match any other organism in the database and the function is not known B. it is called an orthologue; the DNA that codes the ORF does not match any other organism in the database and the function is not known C. it is either a conserved hypothetical protein, i.e., the DNA matches genes in the database but they have no known function, or it is a protein of unknown function; the genes are unique to that organism D. it is either a protein of unknown function, i.e., the DNA matches genes in the database but they have no known function, or it is a conserved hypothetical protein; the genes are unique to that organism
Which of the following uses cattle as an intermediate host?
A. Tapeworm B. Ringworm C. Blood fluke D. Planaria E. Bipalium