How does the knowledge of complete genomes of different organisms help us in any way?
What will be an ideal response?
Since the function of most genes is conserved to a large degree among different organisms, the knowledge of the genomes of different species helps us compare them, leading to a better understanding of gene functions. This in turn will lead to a better understanding of human genetic diseases and will allow us to develop better cures.
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A typical leaf contains __________ chloroplasts
a. 1–5 b. 20–100 c. 100,000–300,000 d. millions of
A mountain rain shadow "falls" on the:
a. arid area on the windward slope b. wet area on the windward slope c. arid area on the leeward slope d. wet area on the leeward slope e. arid area on both slope
Four of the following are characteristic of morphogens. Which one is the exception?
a. They are long-range signals in pattern formation. b. They are encoded by master genes. c. They affect gene splicing. d. Their concentration decreases with distance from source. e. They affect development.
Which of the following is an extension of a lobe of the cytoplasm, and is used by some protists for movement?
a. a pilus b. a cilium c. a pseudopod d. a gullet