Hereditary nonpolyposis colon cancer (HNPCC) requires only one mutational step to initiate the formation of a cancer
cell.
a. True
b. False
False
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Describe the major differences and similarities between gymnosperms and angiosperms
What will be an ideal response?
The nervous system is produced by
a. the ectoderm. b. the endoderm. c. the mesoderm. d. the endoderm and ectoderm. e. all of the germ layers.
Both cyanobacteria and phytoplankton are
A) multicellular. B) eukaryotic. C) photosynthetic. D) parasitic. E) heterotrophic.
The cross GE/ge × ge/ge produces the following progeny: GE/ge 404; ge/ge 396; gE/ge 97; Ge/ge 103. From these data, one can conclude that ________
A) the G and E loci reside on the same chromosome over 50 map units apart B) the G and E loci are segregating independently C) the G and E loci assort independently D) the G and E loci are linked E) the G and E loci show complete linkage