Archaeopteryx is a transitional form between
a. birds and mammals.
b. mammals and reptiles.
c. birds and reptiles.
d. fish and amphibians.
e. amphibians and reptiles.
Answer: c
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What field of study uses geographic distribution of extinct and living species to determine patterns of evolution?
A. Biology. B. Geology. C. Palentology. D. Geneology. E. Biogeography.
Purines and pyrimidines are ____
a. Okazaki fragments b. pentose-phosphate backbones c. nucleic acids d. phosphate bases e. nitrogenous bases
Meselson and Stahl distinguished between parental and newly-synthesized DNA by using
A) heavy metal. B) heavy and light forms of nitrogen. C) nucleic acid dyes. D) chromosome paints.
The genes that determine where appendages will develop on the animal’s body are called
a. ideotic genes b. homeobox c. Hox genes d. homeotic genes e. homeodomains