What species concept is most useful for categorizing cryptic species, where multiple species are found in the same location, are visually very similar, and occupy the same niche, but DNA evidence suggests there are several monophyletic lineages with no gene flow between them.
A. phylogenetic species concept
B. biological species concept
C. visually similar cryptic species excludes morphological species concept
morphological species concept
D. ecological species concept
Answer: B. biological species concept
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If a cell has 32 chromosomes prior to S and undergoes mitosis followed by cytokinesis, each new daughter cell will have how many chromosomes?
A. 64 B. 32 C. 16 D. 8 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 know about mitosis? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Basic dyes such as methylene blue bind to cellular molecules that are
A. aromatic. B. hydrophobic. C. negatively charged. D. positively charged.
During asexual reproduction, the genetic material of the parent is passed on to the offspring by
a. homologous pairing. b. meiosis and fertilization. c. mitosis and cytokinesis. d. karyotyping. e. chiasmata.
In order for an earthworm to lengthen several contiguous segments of its body, it must
A. contract its longitudinal muscles, which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm. B. contract its circular muscles, which pulls up the chaetae and moves the body fluid parallel to the long axis of the worm. C. contract its longitudinal muscles, which pulls up the chaetae and moves the body fluid perpendicular to the long axis of the worm. D. contract its circular muscles, which extends the chaetae into the surrounding soil and moves the body fluid perpendicular to the long axis of the worm. E. contract its circular muscles, which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm.