If only one twin has a trait, the twins are ____________________ for that trait
Fill in the blank(s) with correct word
discordant
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Which of the following cells contain a plasma membrane?
A. Bacterial cells only B. Animal cells only C. Animal cells, plant cells, and bacterial cells D. Animal cells and plant cells only
An effective vaccine does all of the following
EXCEPT a. produce a mild case of the disease. b. stimulate the production of effector T cells. c. cause memory cells to be formed. d. stimulate the production of effector B cells. e. produce passive immunity.
The installation of tile drainage systems on farms removes wetlands from the Midwestern landscape. This with the loss of coastal marshes in the South are dramatically impacting
A) migratory waterfowl. B) blue crabs. C) salmon. D) crayfish.
Which of the following are true about codons?
A) They are complementary to DNA and specify amino acids at the ribosome. B) They are complementary to DNA and are a two-nucleotide code for an amino acid. C) They are a circular series of nucleotide triplets. D) They are complementary to RNA and specify amino acids at the ribosome. E) They are placed at random in the RNA.