Question 8 of 10 10 10 points the fact that being

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Question 8 of 10 1.0/ 1.0 Points The fact that being homozygous recessive for the CCR5 receptor protects people from being infected with HIV, thus causing an increase in the recessive CCR5 allele, is an example of A. microevolution
B. founder effect C. allele switching D. macroevolution Feedback:Correct Question 9 of 10 1.0/ 1.0 Points If alleles that cause disease are constantly being selected against, why would there be any disease- causing alleles in a population over generations?
Feedback:Correct Question 10 of 10 1.0/ 1.0 Points Cheetahs, once hunted to near extinction, are now protected and recovering, although the number of different alleles at 5 different loci has dropped from 28 to 16. This is an example of ________.
Chapter 20 Question 1 of 10 1.0/ 1.0 Points Humans belong in the phylum Chordata. The name Chordata is also known as the
C. parsimony D. scientific name E. taxon Feedback:Correct Question 2 of 10 1.0/ 1.0 Points What type of event is usually associated with each branch on a phylogenetic tree? A. morphological convergence B. the evolution of a new feature C. the formation of a vestigial structure D. mutational disruption
Feedback:Correct Question 3 of 10 1.0/ 1.0 Points Evidence has been gathered over the years that indicate mitochondria and chloroplasts were once bacteria. This idea is termed
Feedback:Correct Question 4 of 10 1.0/ 1.0 Points When a gene is passed to bacteria of a different species that brings with it an important feature, the resulting bacteria would provide complications in determining ________.
B. phylogenies C. survival D. descendents Feedback:Correct Question 5 of 10 1.0/ 1.0 Points The only taxonomic name not capitalized is the ________.
Feedback:Correct Question 6 of 10 1.0/ 1.0 Points Since phylogenetic trees are essentially ________, they are subject to revision as new information is obtained A. hypotheses B. unkowable C. theories D. difficult to construct
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