Fossils
a. are found in underground layers of rock.
b. are distributed underground, with the oldest
forms near the top.
c. have more complex structures the deeper
they are buried.
d. are the same throughout the world no
matter where they are found.
e. that are most like living organisms are
found deepest in the ground.
A
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Genes associated with embryonic development are known as
A) homologous genes. B) sigma factors. C) heterologous genes. D) hopanoids. E) homeotic genes.
The chemical reaction in Figure 47-2 occurs in the:a
stomach as the result of secretions from the pancreas. b. small intestine as the result of secretions from the pancreas. c. large intestine as the result of secretions from the small intestine. d. stomach as the result of secretions from the stomach. e. small intestine as the result of secretions from the liver.
Explain why a person will develop a simple goiter if he or she has an insufficient amount of salt in the diet.
What will be an ideal response?
Males tend to be affected in greater numbers by X-linked recessive genetic disorders than are females because
A. expression of the recessive gene is inactivated by the other X chromosome in females. B. males have only one X chromosome. C. males have a double dose of the gene. D. Y chromosomes are destabilized by the X chromosomes. E. females have only one X chromosome.