The principle of parsimony states that a cladogram produces the best hypothesis about relationships of organisms when the maximum number of assumptions is considered.
Answer the following statement true (T) or false (F)
False
The principle of parsimony states that a cladogram produces the best hypothesis about relationships of organisms when the minimum number of assumptions is considered.
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Which of the following is evidence supporting the Lyon hypothesis of X inactivation?
A. Female mammals that are heterozygous for X-linked traits are phenotypic mosaics. B. A highly condensed structure is consistently observed in female cells, but not in normal male cells. C. A female cat that is homozygous for coat color cannot have a calico phenotype. D. Calico patterns of coat color are never exactly the same. E. All of these are correct
The inner membrane system of chloroplasts consists of flattened sacs called ________ that form stacks called ________.
Fill in the blank(s) with the appropriate word(s).
A flood wiping out a population would be an example of
A) exponential growth. B) survivorship curve. C) demographic stochasticity. D) environmental stochasticity.
When bar-headed geese fly at very high altitudes (possibly over Mount Everest!), they breathe very thin air where the partial pressure of oxygen is very low compared to that at sea level. Which of the following adaptions would help the geese efficiently
exchange gases when flying at high altitudes? A) hemoglobin that has a high affinity for oxygen B) hemoglobin that has a low affinity for oxygen C) hemoglobin that has a high affinity for carbon dioxide D) hemoglobin that has a low affinity for carbon dioxide