The trait of cream-colored eyes in Drosophila is an example of ________
A. simple recessive alleles
B. incomplete penetrance of red eyes
C. a gene modifier effect in eye color
D. gene dosage
E. a spontaneous mutation
C
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Why are microsporidia so hard to classify?
A. When compared to other eukaryotic organisms, microsporidia are extremely small. B. The intracellular parasitic lifestyle greatly reduces the need for functional organelles. C. They lack nuclei. D. They are very rare. 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 microsporidia? 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?
Red-green color blindness is more common in males than females because
A) the red pigment gene is on the X chromosome, the green is on an autosome. B) the green pigment gene is on the X chromosome, the red is on an autosome. C) the rhodopsin gene is on the X chromosome. D) both the red and the green pigment genes are on the X chromosome. E) both the red and the green pigment genes are on an autosome.
Gametangia are
a. chlorophyll-producing structures. b. sex organs. c. a name for colony-forming algae. d. found in slime molds.
The most common type of joint in the human body is a ____
a. synovial joint b. fibrous joint c. membranous joint d. cartilaginous joint e. hinge joint