Which classification level would be the least inclusive?
a. genus
b. family
c. phylum
d. order
e. class
A
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In pea plants flowers are either white or purple; the purple color is produced by pigments called anthocyanins. The production of anthocyanins is a two-step process; the first is controlled by the C gene and the second by the P gene
Both genes must produce functional proteins for anthocyanin to be produced. For each gene, the dominant (C and P) alleles produce functional proteins. Which of the following genotypes will produce white (no pigment) flowers? A. ccPP B. CcPP C. CCpp D. ccPP and CcPP E. ccPP and CCpp
Tumor suppressor genes _____.?
a) encode proteins that help prevent uncontrolled cell growth b) are cancer-causing genes introduced into cells by viruses c) are frequently overexpressed in cancerous cells d) often encode proteins that stimulate the cell cycle
Which of the following is a germ layer that forms the lining of the urinary, respiratory, and digestive tracts?
A) ectoderm B) endoderm C) mesoderm D) embryonic disk
In the lac operon, what effect does inducer binding have on repressor structure?
What will be an ideal response?