In most cases, cancer-causing mutations ____
a. accumulate over a number of years
b. accumulate very quickly within a single cell
c. metastasize within a short time
d. must all occur on the q arm of a chromosome
e. occur during the G0 phase of the cell cycle
a
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Mendel crossed true-breeding plants having yellow peas with plants having green peas. The resulting
plants all had yellow peas. An F1 cross resulted in of the plants having yellow peas and of the plants having green peas. What does this tell you about the alleles for color?
a. yellow is usually the dominant color, but sometimes green can be dominant b. green is the dominant color c. yellow is the dominant color d. yellow is the recessive color e. the F1 plants must have had some green peas that went unnoticed.
What is NOT a viable explanation for the lack of fossil records for more species?
a. Movement of Earth’s crust have destroyed fossils. b. Many species have not been preserved. c. Population density is too small to produce fossils that survive. d. Certain environments do not produce fossils as well as others. e. Body sizes are too large to become fossilized.
Mucus traps pathogens that are later coughed or sneezed away. What form of body defense applies to this example?
A) first line of defense
B) second line of defense
C) third line of defense
D) antibody-mediated immunity
To test the prediction that increased phosphorous levels in lakes lead to increased minnow populations, scientists survey 20 lakes across Minnesota, measuring phosphorous content and quantifying minnow abundances. This is an example of what type of scientific approach?
What will be an ideal response?