Which of the following is not a cellular function associated with the microtubule cytoskeleton?
A. muscle contraction
B. mitosis
C. organization of organelles
D. movement of cilia or flagella
A
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In the southeastern U.S., two species of wild lettuce (Lactuca) do not usually form hybrids, because they bloom at different seasons. The means of isolation appears to be
A. postzygotic and behavioral. B. prezygotic and temporal. C. prezygotic and geographical. D. prezygotic and mechanical. E. postzygotic and ecological. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about reproductive isolation? 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 plants, the haploid generation is called the ______ and the diploid generation is called the __________
A. sporophyte ; spermatogenesis B. gametophyte ; sporophyte C. sporophyte ; gametophyte D. oogenesis ; gametophyte
A cohort is
a. a group of individuals of the same species born during the same time interval. b. any member of the same species. c. a group of individuals with the same parents. d. a group of individuals of the same sex. e. any group of closely related individuals
A man with the autosomal recessive disorder phenylketonuria (PKU) and a woman without PKU have a son named Peter, who does not have PKU. Peter is curious about whether his mother is a carrier for PKU. Which of the following facts would allow him to know?
What will be an ideal response?