Which of the following contradicts the one-gene, one-enzyme hypothesis?
A) A mutation in a single gene can result in a defective protein.
B) Alkaptonuria results when individuals lack a single enzyme involved in the catalysis of homogentisic acid.
C) Sickle-cell anemia results in defective hemoglobin.
D) A single antibody gene can code for different related proteins, depending on the splicing that takes place post-transcriptionally.
D
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Which of the following statements best compares the ovary, ovule, and egg?
A. The three terms are synonymous. B. The ovary is the lower part of the pistil that houses the ovules (also called eggs). C. An ovule is the lower part of the pistil that houses the ovary that in turn contains the eggs. D. Ovules are small ovaries and either can produce eggs. E. The ovary is the lower part of the pistil that houses the ovules that in turn contain the eggs.
________ is the direct migration and penetration of cancer cells into neighboring tissues.
Fill in the blank(s) with the appropriate word(s).
An individual with a genetic makeup of aa BB is
called a. pure-breeding. b. recessive. c. hybrid. d. dihybrid. e. heterozygous.
Microbes cycle N uniquely in other ways
What will be an ideal response?