Autism is characterized by ________
A) impaired communication skills
B) unusual patterns of behavior
C) poor social skills
D) all of the above
D
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Which of these biomes receives the least amount of rainfall, and therefore has low primary production, nutrient-poor soil, and plant species that are adapted for water-storage?
A. tundra B. alpine C. chaparral D. desert E. savannah
Which of the following is NOT a function of transposase?
A. Transposase recognizes inverted repeats. B. Transposase cleaves at both ends of the transposable element. C. Transposase carries the transposable element to a new site on the DNA. D. Transposase cleaves the target DNA at staggered sites. E. Transposase ligates nucleic acid fragments during DNA replication.
Many tomato plants continue to grow throughout the summer growing season. This is an
example of __________.
a. determinate growth b. indeterminate growth c. development d. differentiation
Which of these adaptations to a terrestrial existence evolved most recently?
A) vascular tissue B) seeds C) lignin D) cuticle