If a chemical kills 85% of a population of fish, and 15% have genes to resist the chemical, the chemical is
A. an acquired characteristic.
B. responsible for causing the genes to change.
C. responsible for a gene frequency change.
D. None of the answers is correct.
C. responsible for a gene frequency change.
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QTL stands for quantitative trait loci and is an example of monogenic inheritance
Indicate whether the statement is true or false
Motile bacteria have been placed in an environment with a gradient of a chemical attractant. Which of the following behaviors would you predict?
A. The bacteria will only exhibit runs away from the chemical. B. The bacteria will reduce run duration in the direction of the chemical. C. The bacteria will reduce tumbling frequency. D. Bacteria will randomly switch back and forth between runs and tumbles. E. The bacteria will both reduce tumbling frequency and increase run duration in the direction of the chemical.
Match the terms with the most appropriate description
a. a big RNA is its product b. a binding site for repressors c. specialization of cells d. -CH3 additions to DNA e. inactivated X chromosome f. a guide to flower development________ ABC genes________ XIST gene________ operator________ Barr body________ cell differentiation________ methylation
Vesicles that bud off the ER are typically shuttled to the ________ where their contents can be modified, sorted, and distributed
A) plasma membrane B) lysosome C) nucleus D) Golgi apparatus E) mitochondria