Mutations that eliminate a contiguous region in the Drosophila embryo's segmentation pattern are called ________
A) gap genes
B) linkage genes
C) compartment genes
D) segment genes
E) homeodomains
A
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During breathing the epiglottis points ________ and air moves through the larynx into the ________
a. upwards, trachea b. upward, bronchiole c. upward, lungs d. downward, trachea e. downward, bronchiole
Which type of cell uses cell plate formation to divide the cytoplasm?
a. Animal b. Plant c. Both d. Neither
Which of the following is not associated with mass extinctions?
a. After mass extinctions new species evolve to replace others. b. Mass extinctions do not affect species randomly. c. Species living in isolated areas are more susceptible to extinction. d. Mass extinctions take place over a very long geologic period of time. e. Although new species may evolve, it will take millions of years to replace the losses of a mass extinction.
How do carnivores and herbivores differ?
A. Carnivores can be opportunistic but herbivores cannot. B. Herbivores can be opportunistic but carnivores cannot. C. Carnivores and herbivores require different enzymes to digest their food. D. Carnivores must eat more frequently than herbivores. E. Herbivores remain herbivores at all stages of development, while carnivores are often herbivores in their larval stages.