What is the term for a gene mutation that leads to a myriad of disparate effects?
A) lethal allele
B) multiple allele
C) complementation
D) expressivity
E) pleiotropy
Answer: E
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What is the pollen to ovule ratio for species B?
a. 100 b. 10,000 c. 100,000 d. 100,000,000
Until which period of time did scientists think
that molecules of life could only be made inside living organisms?
a. early 1500s b. late 1500s c. early 1600s d. late 1600s e. early 1800s
How do naked viruses differ from enveloped viruses in their attachment/penetration phase?
a. They uncoat after they enter the cell. b. Their DNA attaches to receptors on the cell surface. c. Their protein coat fuses to the cell membrane. d. Their nucleic acids are injected into the cell.
The movement of molecules from an area of high concentration to an area of lower concentration is called
A. endocytosis. B. diffusion. C. facilitated diffusion. D. active transport. E. osmosis.