In ____, a pair of nonidentical alleles affecting the phenotypes of a given trait are both expressed at the same time in heterozygotes.
A. pleiotropy
B. polygenic inheritance
C. complete dominance
D. codominance
E. a multiple allele system
Answer: D
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The gram-negative coccus that can be described as oxidase-positive, glucose-negative, maltose-negative, sucrose-negative, lactose-negative, and DNase-positive is:
a. N. meningitidis. b. M. catarrhalis. c. Neisseria cinerea. d. N. gonorrhoeae.
Acanthamoeba species
A. cause keratitis. B. are facultative parasites. C. cause encephalitis. D. All of the choices are correct.
Enzymes used to cut DNA molecules in recombinant DNA research are
a. ligases. b. restriction enzymes. c. transcriptases. d. DNA polymerases. e. replicases.
The different proteins characteristic of breast cancer subtypes can be used as _____ for proper diagnosis and
treatment.
a. prebiotics b. biomarkers c. DNA clones d. bioinformatic data e. physical maps