Evidence suggests that the crocodiles are more closely related to the birds than the turtles and snakes. If so, then including crocodiles, but not birds, in the Class Reptilia would make the Class Reptilia
A. not homologous.
B. a polyphyletic group.
C. parsimonious.
D. a monophyletic group.
E. a paraphyletic group.
Answer: E
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If you crossed flies heterozygous for the Cy allele, what phenotypes would you find in the adult F1 generation?
Let Cy = curly wings and Cy+ = wild type. In Drosophila, the Cy allele behaves as a dominant mutation that produces curly wings in the heterozygous condition (Cy/Cy+), but also behaves as a recessive lethal mutation. Flies homozygous for the Cy allele die before reaching adulthood. A. both wild type and curly wings B. wild type only C. curly wings only D. None because all the F1 flies would die before reaching adulthood. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about dominant and recessive alleles? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Explain how the basic structure of a phospholipid bilayer is maintained in an aqueous solution, and identify a change you can make that would permanently disrupt the bilayer
What will be an ideal response?
The ____ are potentially pathogenic to humans
a. Archaea
b. Bacteria c. Archaea and Bacteria d. cyanobacteria e. methanogens
Which of the following is controlled by the sensory-somatic nervous system?
a. heart b. lungs c. skeletal muscle d. endocrine glands