A new plant species may arise in a single generation by
A) errors in meiosis leading to polyploidy.
B) a sudden geological disruption causing separation of two populations.
C) mutations in genes for flower color.
D) changes in the pollinator species.
Answer: A
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The three-dimensional shape of a protein is determined by the ____ and the results of chemical modifications and other processing events
a. interaction of R groups b. interaction with other polypeptide chains c. amino acid sequence d. bonds formed with other proteins e. initiation complex
Identify and briefly explain the four premises of evolution by natural selection, as proposed by Charles
Darwin. What will be an ideal response?
Which molecule, when moving across a plasma membrane, would require the most ATP to be used?
A) a water molecule B) a simple sugar, such as glucose C) a dissolved gas, such as carbon dioxide D) an ion moving against a concentration gradient
Which type of electromagnetic waves have the shortest wavelength?
a. ultraviolet b. radio waves c. microwaves d. gamma waves e. green visible light