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WGU Introduction to Biology (KBC1, C190) Sample Questions:

1. In a cross-fostering experiment, half of thepurple-featheredbarn swallow eggs were raised bygray-feathered swallows; upon maturity, fostered young weregray, while those raised by their purple parents werepurple.
What best explains these results?

A) Genes in transplant parents determine feather color
B) Feather color is influenced byboth genes and environment
C) Genes have no influence on feather color
D) Feather color follows codominance

2. Molecules withhydrophilic headsandhydrophobic tailsform round structures with tails facing inward when placed in water. What role do such molecules play in a cell?

A) Form membranes
B) Store energy
C) Store genetic information
D) Catalyze chemical reactions

3. Which type of cell division has onlyone division per cycle?

A) Interphase
B) Prophase
C) Meiosis
D) Mitosis

4. During whichphase of mitosisare the replicated chromosomessplitand the daughter chromosomesmoved to opposite poles?

A) Metaphase
B) Telophase
C) Prophase
D) Anaphase

5. A cell has increased in size and is preparing to divide. Before division, DNA must be replicated.During which stageof the cell cycle is DNA replicated?

A) Cytokinesis
B) G#
C) Synthesis
D) G#

Solutions: