Why is the cassava plant difficult to engineer without the help of modern biotechnology?
A) The plant has a very low mutation rate.
B) The plant is long lived making selective breeding ineffective.
C) The plant is integral to African agriculture and is already optimized.
D) The plant does not undergo recombination events, which limits genetic drift.
Answer: B
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Which level of organization reflects an individual composed of multiple organ systems?
Which level of organization reflects an individual composed of multiple organ systems?
The ability to roll the edges of the tongue upward in a U-shape is considered to be an inherited trait. The standard assumption is that tongue-rolling is a dominant allele at a single gene locus. Which of the following would cast doubt on this assumption? Select all that apply.A) A student who can roll his tongue has both a mother and father who cannot.B) In a large research study, the majority of tongue-rollers were male.C) A research study with 1,000 participants reports that most non-tongue-rollers can learn to roll their tongues.D) A student who cannot roll his tongue has both a mother and father who can.
What will be an ideal response?
Pit vipers and boas locate their prey using:a
electroreceptors. b. thermoreceptors. c. specialized olfactory receptors. d. ampullae of Lorenzini. e. lateral line organs
Which of the following statements concerning glycolysis is TRUE?
A) The first step of glycolysis involves oxidative phosphorylation. B) The glycolytic pathway is cyclical. C) Glucose is activated by substrate-level phosphorylation. D) Ribulose 5-phosphate is an intermediate of glycolysis. E) Two NADH molecules are reduced during glycolysis.