You work for a pharmaceutical company that designs small RNAs, used to control expression of disease genes. The primary focus area of your research should be
A. translational repression.
B. transcriptional repression.
C. transcriptional activation.
D. translational activation.
Answer: A
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Which of the following indicates the correct order of these events?
A. Anaphase - Telophase - Prophase - Prometaphase - Metaphase B. Telophase - Prometaphase - Prophase - Metaphase - Anaphase C. Metaphase - Prometaphase - Prophase - Anaphase - Telophase D. Prophase - Prometaphase - Metaphase - Anaphase - Telophase
A monoecious plant could have
a. separate male and female flowers on the same plant. b. flowers that have both stamens and carpels in the same flower. c. either a male flower or a female flower on the same plant but never both. d. a and b. e. b and c.
In order to be acted on by sexual selection, what is required of a trait?
A) It must be something that influences mate choice by the opposite sex. B) It must be something that increases survival. C) It must be a male trait. D) It must be a trait that increases fertility.
The figure below shows the per capita mortality rates for three different vertebrate species. How would the graphs look like in the absence of senescence?
The human females are represented by the lowest line on the graph, the chimpanzee females are represented by the middle line on the graph, and the Harbor porpoise is represented by the top line on the graph. a. They would rise linearly with age. b. They would be parallel to the x-axis. c. They would continue to show elevated rates at an early age, but then bottom out and parallel the x-axis. d. This cannot be confidently determined as the mortality rate mirrors both extrinsic mortality and senescence.