If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?
A) lion
B) domestic cat
C) wolf
D) leopard
C
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How does the adaptive immune system differ from the innate immune system?
A. in the ability to distinguish self from nonself B. in having memory C. in the ability to target a specific pathogen D. both in having memory and in the ability to target a specific pathogen
Similarity in any type of biological trait resulting from shared ancestry is called ____
a. homology b. homoplasy c. exaptation d. anagenesis e. cladogenesis
The sudden, unexpected occurrence of a disease in a limited segment of a population is called a(n) ________.
A. epidemic B. sporadic disease C. outbreak D. incident
Fungi spores are haploid; what distinguishes haploid spores?
A. Haploid spores have a double set of chromosomes, half the number of chromosomes of diploid organisms. B. Like diploid organisms, haploid spores have a single set of chromosomes. C. Haploid spores have a single set of chromosomes, half the number of chromosomes of diploid organisms. D. Like diploid organisms, haploid spores have a double set of chromosomes.