Categorization of algae is challenging. In the hybrid system of algal classification, what are the categories of algae based on?
A) The type of photosynthetic pigments present, the chemical makeup of the cell wall, cellular morphology, the form in which food is stored
B) The type of photosynthetic pigments present, genetic analysis of the DNA, cellular morphology, the form in which food is stored
C) The type of photosynthetic pigments present, the chemical makeup of the cell wall, cellular morphology, the number of flagella
D) The type of photosynthetic pigments present, the chemical makeup of the cell wall, the physical habitat of the algae, the form in which food is stored
A) The type of photosynthetic pigments present, the chemical makeup of the cell wall, cellular morphology, the form in which food is stored
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The multicelled projections that protrude from the lining of the small intestine are called ____
a. sphincters b. brush borders c. microvilli d. villi e. macrovilli
If you are given a recombination frequency of 34% between genes X and Y and 27% between X and Z, can you predict the order of the three genes?
A) Yes; the order is X-Z-Y. B) Yes; the order is X-Y-Z. C) Yes; the order is Z-X-Y. D) No; based on this data alone, the order could be Z-Y-X or X-Y-Z. E) No; based on this data alone, the order could be X-Z-Y or Z-X-Y.
How do fossils provide evidence of evolution? How are scientists able to determine the age of fossils? What will be an ideal response?