Detritivores are
a. bacteria.
b. plants.
c. fungi.
d. animals.
e. both bacteria and fungi.
D
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What is the distance between these two genes?
You are mapping the location of two genes in Drosophila, listless l and blind b. (l+ b+ b+) and (l+ l b+ b) flies are normal, but (l l b b) flies don't move around very much and cannot detect the location of a light source. You perform a testcross with a doubly heterozygous fruit fly and get the following results: listless, sighted: 100 listless, blind: 400 normal activity:, sighted 400 normal activity:, blind 100 A. They are on different chromosomes. B. They are 10 map units apart. C. They are 20 map units apart. D. They are 40 map units apart. E. They are 80 map units apart.
Temperature is perhaps the most important factor in the distribution of organisms because
A. water is more scarce in warmer environments. B. most organisms are unable to regulate their body temperature precisely. C. many organisms are able to grow faster in warmer climates. D. the metabolic optimum for endothermic animals is in temperate areas. E. wind amplifies the effect of cool temperatures.
Explain why choanoflagellates are thought to be of particular evolutionary importance. What will be an ideal response?
What type of reaction is the reverse of a condensation reaction?
A.) oxidation B.) decondensation C.) hydrolysis D.) reduction