Two or more alleles of a gene are circulating at relatively high frequency in a population's gene pool. What term describes this state?
a. frequency-dependent selection
b. polyploidy
c. multiple allele systems
d. balanced polymorphisms
e. prominent alleles
d
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Some prokaryotic and all eukaryotic cells use oxygen to harvest energy from food molecules. In which form is this energy available to power cellular work?
a. fat molecules b. glucose molecules c. ATP molecules d. heat and light e. NADH
Which process uses proteins to move molecules against a concentration gradient?
A.) active transport B.) passive transport C.) endocytosis D.) phagocytosis
The connection between the hypothalamus and the anterior pituitary is ________
A) via special ducts B) neural C) circulatory D) There is no connection.
All mutations are harmful to the cell.
Answer the following statement true (T) or false (F)