Transmembrane movement of a substance up a concentration gradient requires ________ transport
Fill in the blank with correct word.
Answer: active
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A sizable population was analyzed for SNPs in a certain DNA region. Four possible variants were found, with the following frequencies: SNP 1: GGTCTAGGA; frequency = 0.91 SNP 2: GGTGTAGGA; frequency = 0.03 SNP 3: GGTATAGGA; frequency = 0
03 SNP 4: GGTTTAGGA; frequency = 0.03 If the population is in Hardy-Weinberg equilibrium, what is the total frequency of heterozygotes at this SNP locus? A) 0.828 B) 0.009 C) 0.170 D) 0.055 E) 0.0018
The very first primates were
A. monkeys. B. gibbons. C. prosimians. D. apes.
Ferns possess all of the following EXCEPT:
a. cuticles. b. embryos. c. seeds. d. roots. e. leaves.
In tomatoes, red (R) is dominant to yellow (r), tall (D) is dominant to dwarf (d), and smooth (H) is dominant to hairy (h). How many possible different phenotypes are there in relationship to these three characteristics?
A. 6 B. 8 C. 9 D. 16 E. 27