Which of these would be considered a cis-regulatory element for a gene?
A. Methylation of DNA preventing transcription
B. A region of DNA sequence upstream of a gene where transcription factors bind
C. A DNA binding protein that functions to repress transcription
D. A protein that binds to an enhancer to activate gene expression
E. a ribosome that translates a mRNA sequence to produce a transcription factor
Ans: A. Methylation of DNA preventing transcription
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What is the appropriate order of the stages of investigating whether maple trees drop their leaves in the autumn because of colder days?
(1) Maple trees are grown in two greenhouses where the only variable is temperature (15?C vs. 10?C). (2) The hypothesis is rejected. (3) There is no statistical difference in the number of leaves dropped at 10?C as compared to 15?C. (4) The observation is that maple trees drop their leaves in autumn. (5) The hypothesis is that maple trees drop their leaves because of colder temperatures. A. 1, 2, 3, 4, 5. B. 3, 4, 5, 1, 2. C. 5, 4, 3, 1, 2. D. 4, 5, 1, 3, 2. E. 3, 4, 2, 1, 5.
Most of an apple fruit is derived from the
a. receptacle. b. ovary. c. ovule. d. endosperm. e. cotyledons
What was Carrie Buck’s significance in the history of genetics?
A. She was a famous advocate for eugenics. B. She became the first woman geneticist. C. She was sterilized after the US Supreme Court determined she was feebleminded. D. She discovered how to genetically modify corn to be resistant to herbicides. E. She is the author of the first biography of Gregor Mendel.
Should the cost of treatment for a genetic disorder be an important consideration for insurance companies when
deciding whether or not to cover the treatment? Justify your reasoning. What will be an ideal response?