If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?
A) A and D
B) B and D
C) B and C
D) D and E
D
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What is the result of successful communication between rhizobia and their plant hosts?
A. Rhizobia consume the plant tissue as an energy and carbon source, causing disease in the plant. B. The plant supplies organic forms of nitrogen to the rhizobia. C. The plant consumes rhizobiaas an energy source and carbon, destroying the invading bacteria. D. The rhizobia invade the plant root and begin to fix nitrogen with the assistance of the plant.
One goal of pedigree analysis is to determine ____
a. what diseases a family will display b. if two people are related c. gene loci d. whether a gene has a dominant or recessive pattern of inheritance e. what treatment a person should undergo
Suppose that in studies of genes on the same chromosome you find the following recombination
frequencies: ©2014 Brooks/Cole, Cengage Learning In this case it would be proper to say that a, c, and b are
a. linked genes. b. different alleles of the same gene. c. alternative alleles that are not physically possible since the numbers do not add up. d. linked genes that are not physically possible since the numbers do not add up. e. three of the possible alleles for determining a particular trait.
The pH scale is a measure of:
a. how many degrees a professor has. b. the temperature of water. c. concentration of hydrogen ion in a volume of solution. d. concentration of hydroxide ions in a volume of solution.