How did scientists obtain a gene that can make papaya plants resistant to a new papaya root fungus?
a. They synthesized a new gene by assembling a unique combination of amino acids.
b. They found a root-fungus-resistant gene in grapes.
c. They created the plant-root-resistant gene by combining genes from a tree and a type of algae.
d. They removed a gene from the DNA of the root fungus.
Answer: b. They found a root-fungus-resistant gene in grapes.
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The most abundant protein on Earth is:
A. chlorophyll. B. cellulose. C. rubisco. D. water. E. keratin.
A karyotype is a(n) __________
A. organelle of eukaryotic cells. B. stage of prophase I in meiosis. C. division of the cytoplasmic material following mitosis. D. organized representation of the chromosomes within a cell. E. None of the answers are correct
Which of the following statements is correct?
a. Offspring of two different true-breeding varieties are called hybrids. b. Mendel's pea plants could cross-fertilize but not self-fertilize. c. True-breeding plants are able to produce a variety of flower colors when self-fertilized. d. A genetic cross produces the P generation.
The cell does not need ATP to survive.
a. true b. false