Typically, where would the oldest fossils be found?
a. superficial layer of the Earth
b. deep layer of the Earth
c. on the ocean floor
d. in lake beds
e. on mountaintops
ANSWER: b
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If Mendel based his data only on two traits, and the genes influencing those traits were linked and located close together on the same chromosome, which of his laws would he not have been able to resolve?
Comments: The law of segregation applies to traits influenced by single genes. The law of Independent Assortment applies to two or more traits that are influenced by genes on different chromosomes (or very far apart on the same chromosome.) A. the law of segregation B. the law of independent assortment
The geographical distribution of organisms makes sense only in the context of:
a. natural selection. b. plate tectonics. c. continental drift. d. evolution. e. ecology.
The 3 parts of sperm are the head, middle piece and _______________
A. Acrosome cap B. Head C. Midpiece D. Flagellum E. Tail
The gene coding for Bt crystals have been genetically engineered into crop plants in order to:
a) make crops less sensitive to herbicides. b) make crops more resistant to insects. c) make crops more sensitive to herbicides. d) make crops grow faster. e) make crops develop larger fruits and vegetables.