Two strains of S. cerevisae (yeast) are crossed. One has the genotype ABC and the other abc. Five sets of the resultant tetrads are noted below. In which set did a gene conversion event occur?
A) abc, aBc, AbC, aBC
B) abc, abc, ABC, ABC
C) aBc, aBc, AbC, AbC
D) abC, abc, ABc, ABC
E) Abc, Abc, aBC, aBC
A) abc, aBc, AbC, aBC
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Nutrient absorption is mediated by the ________.
A. cell membrane B. nuclear membrane C. proteins in the periplasmic space D. peptidoglycan layer E. cell wall
One of the first sequenced genomes was for the bacterium Haemophilus influenzae. Once the genes were annotated, a ________ was constructed to represent the entire genome visually.
A. physical genome map B. metagenomic map C. ORF map D. color-code map
Humans have disrupted the nitrogen cycle primarily by
a. irrigation. b. cutting down forests. c. using nitrogen-containing fertilizers. d. crop rotation. e. leaching.
The systemic circulation begins with the ____ side of the heart
Fill in the blank(s) with the appropriate word(s).