Domestic dogs are given the scientific name Canus lupus familiaris. To what genus do they belong?
a. familiaris
b. lupus
c. Canus
d. Canidae
c. Canus
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The majority of Drosophila embryo segments will become part of the ________ in an adult fly.
A. abdomen B. thorax C. head D. head or thorax E. bithorax complex
Mutations are likely to persist after SOS repair, but not after light-induced or excision repair
Indicate whether this statement is true or false.
One possible reason that there are not any really large insects currently living on Earth is that
A. gas exchange across their moist skin surfaces cannot support the metabolic needs of a large body. B. they do not have as many papulae as echinoderms. C. their gills do not have as many lamellae as fish gills. D. the bulk flow of air through their tracheal tubes would be more difficult the larger the body and longer the tracheal tubes. E. their lungs never evolved to be as highly branched as a mammal's. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about respiration in insects? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In a mating between two individuals that are heterozygous for a recessive lethal allele that is expressed in utero, what genotypic ratio (homozygous dominant: heterozygous: homozygous recessive) would you expect to observe in the offspring?
a. 1:2:1 b. 3:1:1 c. 1:2:0 d. 0:2:1