The cavity between the body wall and the digestive tract is the
a. coelom.
b. peritoneum.
c. cecum.
d. rectum.
e. blastocoel.
A
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Genetic maps are based on recombination frequencies. Because both odd and even numbers of crossovers can occur between any two gene loci, as the physical distance between two loci increases, the maximum recombination frequency levels off at 50%. However, suppose you discovered a species where only an even number of crossovers can occur between any two gene loci. In this case, as the physical distance between two loci increases, you would expect the maximum recombination frequency to
A. remain at zero. B. increase with no limit. C. level off at 25%. D. level off at 75%. E. level off at 100%. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about recombination frequency? 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?
All of the following are considered a main ocean basin except:
a. Pacific. b. Atlantic. c. Mediterranean. d. Arctic. e. Indian.
Answer questions 86–90 in reference to the five divisions of
vascular plants listed below. a. lycophytes b. bryophytes c. monocots d. conifers e. eudicots E 86. In members of this group the gametophyte is the dominant generation. D 87. The giant club mosses of the Carboniferous period were members of this group. M 88. Orchids are members of this group. D 89. Members of this group are heterosporous with welldeveloped seed and pollen-bearing cones. M 90. Members of this group have seeds containing two cotyledons enclosed in an ovary.
Ecologically speaking, most soil fungi are to plant roots as:
A) viruses are to animals. B) smut fungi are to corn. C) intestinal bacteria are to humans. D) mosquitoes are to mammals.