Plants first colonized land at least _________.
A. 75 million years ago
B. 245 million years ago
C. 475 million years ago
D. 1.2 billion years ago
C. 475 million years ago
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Some members of the Archaea lack a cell wall.
Answer the following statement true (T) or false (F)
Answer the following statements true (T) or false (F)
1. Pneumocystis pneumonia is a common contributory cause of death in AIDS patients. 2. Tinea versicolor is caused by a yeast named Malassezia furfur. 3. Mycetomas are respiratory infections. 4. When grown at room temperature, Coccidioides immitis produces yeast colonies. 5. Histoplasmosis is the most common systemic fungal infection in AIDS patients.
The observation that schizophrenia is associated with duplications of a certain copy number variant (CNV), while autism spectrum disorders are associated with deletions of the same CNV, suggests that _____.
a. CNV mutations are present in all psychiatric disorders b. both disorders have identical phenotypes c. both disorders have an environmental component d. both disorders share common developmental pathways e. neither disorder has a genetic component
The number of offspring that could be born is the
A. sex ratio. B. exponential growth phase. C. population. D. reproductive capacity.