Which of the following has an anticodon to bind to the protein synthesizing machinery?
a. DNA
b. mRNA
c. rRNA
d. tRNA
e. none of these
d
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Review the pedigree shown in Figure 17.7 and choose the most accurate statement about the inheritance of an X-linked recessive mutation
A. For rare X-linked traits, most of the affected individuals are males. B. Daughters of affected males are always affected. C. The offspring of an affected male are usually affected. D. The sons of the sisters of affected males will always be affected. E. The brothers of affected males are always affected.
An autosomal recessive disorder strikes 1 in 1,800 newborns in a population. The frequency of carriers of this disorder is approximately
A) 0.00055. B) 0.023. C) 0.045. D) 0.5.
Which of the following is NOT a factor that
has led to a dramatic increase in the human population?
a. increase in the carrying capacity b. increased reproductive life expectancy c. human invasion of new habitats and climatic zones d. a reversal from K-selected reproduction to r-selected reproduction e. the development of public health and the germ theory of diseases
The various characteristics of organisms that result from their genetic makeup are collectively referred to as an organism's ________
Fill in the blank(s) with correct word