Which of the following is true regarding hagfish and lampreys?
A. They are characterized by a bony lower
jaw.
B. They are invertebrates.
C. They are bony fish.
D. They are vertebrates.
D
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After identifying a specific protein associated with a medical problem, the corresponding gene can be identified with a , which is radioactively or fluorescently tagged.
A. DNA probe B. short tandem repeat C. heterozygous genotype D. pseudogene E. homologous chromosome
The cells responsible for clotting are
A. leukocytes. B. erythrocytes. C. platelets. D. chondrocytes. E. osteocytes.
C14 is a radioactive isotope, and due to its predictable
__________ rate it is used to date organic fossils. Fill in the blank(s) with the appropriate word(s).
Which substance will help in seed germination and indicates to the plant that the stem must elongate to reach the light?
What will be an ideal response?