The location of genetic information on chromosomes had been established beyond any doubt by:
A) 1880. B) 1890. C) 1920. D) 1900. E) 1850.
Answer: C
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Differentiate between primary, secondary, tertiary, and quaternary structure of proteins
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Researchers found three genes on chromosome 22 in chimpanzees that, when compared to our human genes, have given us insight into our evolution. What were those three genes?
A. genes for speech development, hearing, and smell B. genes for chest size, cranial size, and leg length C. genes for speech development, opposable thumbs, and leg length D. genes for taste, opposable thumbs, and bipedalism E. genes for food preference, bipedalism, and cranial size
Which of the following is NOT true concerning homologous chromosomes?
a. There are two of each kind. b. Each parent contributes one of each homologous pair. c. Most homologous chromosomes carry the same genes for the same traits. d. The number of homologous chromosomes is doubled in each generation. e. Homologous chromosomes pair up during early meiosis.
How do radioactive isotopes differ from isotopes?
A) Radioactive isotopes have more neutrons than do isotopes. B) Radioactive isotopes are stable; isotopes are unstable. C) Radioactive isotopes have fewer neutrons than do isotopes. D) Radioactive isotopes are unstable; isotopes are stable.