The axial skeleton includes which of the following?
A. Phalanges
B. Ribs
C. Femur
D. Ulna
E. Metatarsals
Answer: B
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Put the following events in the proper order:i
Pollen tube develops. ii. Pollen grain lands on the stigma. iii. Sperm fertilizes the egg.
a. i, ii, iii b. i, iii, ii c. ii, i, iii d. iii, ii, i
Where on Earth would primary productivity be the lowest?
a. rain forest b. Antarctic c. tundra d. oceans e. deciduous forests
Dentinogenesis imperfecta is a rare, autosomal, dominantly inherited disease of the teeth that occurs in about one in 8000 people (Witkop, 1957). The teeth are somewhat brown in color, and the crowns wear down rapidly
Assume that a male with dentinogenesis imperfecta and no family history of the disease marries a woman with normal teeth. What is the probability that (a) their first child will have dentinogenesis imperfecta? (b) their first two children will have dentinogenesis imperfecta? (c) their first child will be a girl with dentinogenesis imperfecta?
The chromosome theory of inheritance, developed by Sutton and Boveri, provided an explanation for Mendel’s
principle of segregation by proposing that:a. sister chromatids separate during mitosis. b. all genes are linked on a single chromosome. c. linked genes are inherited together. d. homologous chromosomes segregate during meiosis. e. homologous chromosomes segregate during mitosis