Glyptodonts are fossil forms that resemble ____
a. ostriches
b. armadillos
c. kangaroos
d. turtles
e. sloths
ANSWER: b
You might also like to view...
What is the purpose of a selectable marker such as the antibiotic-resistance gene ampR?
A. Selectable markers allow a researcher to identify cells that have incorporated the recombinant plasmid. B. Selectable markers produce antibiotics, which kill cells that have not incorporated recombinant plasmid. C. Selectable markers prevent cells that have incorporated one plasmid from incorporating another. D. Selectable markers allow a researcher to identify the recombinant plasmid. E. Selectable markers are only effective in viral vectors.
For the yeast galactose metabolizing gene, GAL1, to be transcribed, the regulatory protein produced by the GAL4 gene binds to
A) RNA polymerase. B) upstream activator sequence G (UASG) region. C) a ribosome. D) the operator sequence. E) the repressor protein.
Plants growing in sunlight tend to allocate more resources to leaf production than to root production compared with plants growing in full sun
Indicate whether the statement is true or false
Which of the following statements is true?
A) All traits currently in a population must have provided a reproductive advantage at some point in time. B) The advantage a trait conveys depends on its environmental context. C) A population will always evolve to fit current conditions. D) All traits are simultaneously maximized in a population.