Imagine that a coyote tobacco plant is being eaten by M. sexta caterpillars. In response to these specific herbivores, the tobacco produces volatile chemicals that can travel through the air. Why?
A. to signal to other tobacco plants that
caterpillars are in the area
B. to produce an odor that will deter other
caterpillars from eating its leaves
C. to attract insect predators that will eat the
caterpillars
D. to signal to other parts of the plant to
produce more nicotine
C
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Which of the following correctly orders the sequence in which genes controlling the development of the anterior-posterior axis of Drosophila larvae are expressed?
A. maternal-effect genes, gap genes, pairrule genes, segment-polarity genes B. maternal-effect genes, gap genes, segment-polarity genes, pair-rule genes C. pair-rule genes, maternal-effect genes, segment-polarity genes, gap genes D. maternal-effect genes, segment-polarity genes, pair-rule genes, gap genes E. gap genes, pair-rule genes, segmentpolarity genes, maternal-effect genes
Stephanie is infected with a pathogen. How might it be determined if the pathogen is a virus
or a bacterium?
a. A virus does not have genetic material such as DNA or RNA. b. A bacterium has ribosomes, but a virus does not. c. A virus does not have an outer covering or capsule. d. Bacteria are eukaryotes, and viruses are prokaryotes.
A plant systematist aims to ____ organisms
a. identify and name b. identify and describe c. identify, name, and classify d. identify, describe, name, and classify e. identify, describe, name, classify, and determine evolutionary relationships of
If a monohybrid cross results in a 1:2:1 ratio for both the genotype and the phenotype in the F2
generation, then which type of inheritance might be at work?
a. dominance b. incomplete dominance c. epistasis d. pleiotropy e. polygenic inheritance