To study an organism's transcriptome by microarray, ________ is hybridized onto DNA silica chips containing gene sequences that are ________ to the sequence
a. cDNA / complementary
b. cDNA / identical
c. mRNA / complementary
d. mRNA / identical
Answer: A
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A billionaire buys a sterile volcanic island that recently emerged from the sea. To speed the arrival of conditions necessary for plant growth, the billionaire might be advised to aerially sow what over the island?
A) basidiospores B) spores of ectomycorrhizae C) soredia D) yeasts E) leaves (as food for fungus-farming ants)
A group consisting of a common ancestor and all of its descendants is a
A. order. B. phylum. C. species. D. clade. E. genus.
While exploring a sulfur spring, a scientist finds a new organism
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Which mammal group is characterized by offspring that are born early in development and then finish embryonic development while nursing in their mother's abdominal pouch?
a. Monotremes b. Eutherians c. Placental mammals d. Marsupials e. Sloths