Suppose that a given gene undergoes a mutation to a dominant allele such that 2 out of 100,000 offspring exhibit the new mutant phenotype. Assuming that these offspring are heterozygous, what is the mutation rate for the gene?
What will be an ideal response?
1/100,000
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This stage of the cell cycle is characterized by growth and it contains a checkpoint to verify that all of the DNA has been replicated prior to mitosis.
A. G1 B. S C. G2 D. Mitosis E. Cytokinesis
A lacOc mutant would
A) never make lac structural genes. B) be constitutively expressed. C) bind receptor protein. D) have repressed expression. E) be able to be induced by lactose.
Dendrochronology can be useful in determining:a
the dates of past earthquakes and volcanic eruptions. b. future climate patterns. c. the solution to global warming. d. how tree growth affects air pollution. e. the time of day.
Which of the following is in the correct order in the formation of antibodies?
A. antigen binds to BCR; B cell activated; B cell divides; plasma cells form B. plasma cells form; B cell divides; B cell activated; antigen binds to BCR C. B cell activated; antigen binds to BCR; B cell divides; plasma cells form D. antigen binds to BCR; B cell divides; B cell activated; plasma cells form E. plasma cells form; B cell activated; B cell divides; antigen binds to BCR