Seminal vesicles secrete fructose and ____ into the semen
a. DHT
b. oxytocin
c. testosterone
d. estrogen
e. prostaglandins
e
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You are studying the function of a recently identified gene in C. elegans. You perform genetic screens for several months in an attempt to isolate loss-of-function gene mutations, but your efforts are unsuccessful. Your advisor suggests you try another approach to eliminate gene function. The best technique to accomplish this goal would be
A. to design a repressor to bind to the operon of this gene. B. use a histone deacetylase to induce a transcriptionally inactive state. C. use a C. elegans strain with a homozygous TFIID mutation to prevent the translation initiation complex from forming. D. use RNA interference to prevent mRNA translation. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about loss-of-function mutations? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In lineages that moved onto land, gills were replaced by lungs; kidneys became better at conserving
__________, and the circulatory system became more efficient. Fill in the blank(s) with the appropriate word(s).
The mechanism that "breaks" the linkage between linked genes is
A) pleiotropy. B) codominance. C) independent assortment. D) crossing over.
Which of the following must leave the nucleus via the nuclear pore complexes?
A. tRNA B. mRNA C. Immature ribosomal subunits D. Immature ribosomal subunits, tRNA, and mRNA