Early in the twentieth century, Walter Sutton and Theodor Boveri noted that the behavior of chromosomes during meiosis is identical to the behavior of genes during gamete formation. They proposed that genes are carried on chromosomes, which led to the
basis of the ________.
A) Chromosome Theory of Inheritance
B) First Law of Thermodynamics
C) Chromosomal Maintenance Theory
D) Law of Segregation
E) Law of Independent Assortment
Answer: A
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Which of the following is TRUE of a genetic mutation?
A. It always produces harmful effects. B. It never affects protein structure or function. C. It is not a mechanism through which biological evolution occurs. D. It happens quite frequently in a population. E. It generally produces a change in the DNA sequence of a gene.
Mussels and sponges sometimes contain methanotrophs as intracellular symbionts because the methanotrophs
A. allow the partnership to use hydrogen sulfide as a source of electrons. B. remove otherwise toxic levels of methane from the environment. C. convert methane to carbohydrate for use by the host. D. All of the choices are correct.
Arrange the small intestine components in order of size from largest to smallest
What will be an ideal response?
Which component is the oxidizing agent in the following chemical reaction?
4 Fe + 3 O2 ? 2 Fe2O3 a. water b. iron c. oxygen d. rust e. hydrogen