Individuals with Turner syndrome have which of the following sex chromosome complements?
A) XO
B) XX
C) XYY
D) XXY
E) XXX
A) XO
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Animals that have external fertilization are most likely to reproduce in which of the following areas?
A) sand dune B) polar ice sheet C) shallow lake D) tallgrass prairie
In the cross AaBbCc à— AaBbCc, what is the probability of producing the genotype AABBCC?
A) 1/4 B) 1/8 C) 1/16 D) 1/32 E) 1/64
The event that occurs when allolactose levels increase in E. coli is
A. transcription of genes within the lac operon increases. B. transcription of genes within the lac operon decreases. C. transcription of genes within the lac operon does not change. D. E. coli cells replicate rapidly. E. the tryptophan operon becomes more active.
Science is
A. able to supply solutions to most human problems. B. always correct. C. distinguished from nonscientific areas of study by the way information is gathered. D. a body of information gathered about nature in the last 2,000 years.