Freshwater lakes in temperate regions will turn over in the ____.
A. fall only
B. winter only
C. spring only
D. summer only
E. fall and spring
Answer: E
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Population geneticists are interested in the forces that change the ____________________ of genes in a population
Fill in the blank(s) with correct word
While phenotypically male, smaller testes, enlarged breasts, and reduced body hair are all signs of a non-disjunction error condition that results in an XXY genotype. Which kind of error results in XXY genotype, called Klinefelter syndrome?
a. point mutation b. deletion c. non-disjunction d. crossing over
Which of the following is TRUE regarding competition?
A) One species will always drive the other to extinction. B) Competition is always focused on food. C) The species larger in size typically outcompetes the smaller. D) Water temperature can influence the outcome of competitive interactions.
You have been asked to design a synthetic DNA motif, able to bind transcriptional regulatory proteins. The location on this motif that you will design for protein binding is the
A. major groove of the DNA double helix. B. phosphate backbone of the DNA double helix. C. minor groove of the DNA double helix. D. available hydrogen bonds of bases in single-stranded DNA. E. sugar backbone of the DNA double helix.