Duchenne muscular dystrophy is, for all practical purposes, a(n) ____________________ trait. Fill in the blank(s) with the appropriate word(s)
sex-limited
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The genomes of free-living spirochaetes are larger than those living in animal hosts. Why might this be so?
A. Free-living spirochetes will need genes to code for additional proteins to synthesize or obtain their own food from the environment around them. Parasitic spirochetes obtain nutrients from the animal host, and may not need to move towards those nutrients either. B. The spirochetes in animal hosts are different species entirely. As different species, they would naturally have smaller genomes. C. A smaller genome implies simplicity-the spirochetes living in animal hosts have fewer needs, so they need fewer genes. D. It isn't so-all spirochetes would have the same size genomes, since they're all the same species of microbe.
For an individual Drosophila melanogaster fly the time from when it is laid as an egg to when it is an
adult capable of breeding is about ____.
a. 3 months b. 2 days c. 6 weeks d. 10 days e. 1 month
The "missing link" between birds and dinosaurs was found when fossils of ________ were unearthed in a German quarry
a. Archaeopteryx b. Phascolarctos cinereus c. Sphenodon d. Saurophaganax
Which of the following will result in modifications to the expected Mendelian ratios?
A) Epistasis B) Incomplete dominance C) Incomplete penetrance D) Gene interaction E) All of these