Mouse models for human diseases, such as cystic fibrosis, have been created by recombinant DNA technology.
Answer the following statement true (T) or false (F)
True
By inserting an allele such as the one that causes cystic fibrosis, a mouse with a phenotype similar to a human with cystic fibrosis can be isolated and studied.
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Answer the question using the accompanying figure. Which letter represents the littoral zone?
a. A only b. B only c. C only d. A and B e. B and C
How are giant kelp and sea grass alike?
a. both contain chlorophyll a b. both utilize gas-filled spaces for buoyancy c. both lack conductive tissues and rely on diffusion to transport molecules manufactured by photosynthesis d. both a and b e. both b and c
Colonic Fermentation
What will be an ideal response?
The first cells gave rise to
A. eukaryotes and bacteria. B. bacteria and fungi. C. archaea and protists. D. bacteria and archaea.