Which one of the following is NOT considered to be one of the macronutrients needed by plants?
A. manganese
B. sulfur
C. phosphorus
D. nitrogen
E. potassium
A. manganese
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Which of the following would probably be the least surprising finding from comparing the genomes of
black cottonwood and thale cress?
a. Black cottonwood and thale cress never shared a common ancestor. d. Black cottonwood has genes that govern secondary growth, but these genes are absent in thale cress. b. Black cottonwood has genes that influence membrane transporters, but thale cress lacks genes that influence membrane transporters. e. Black cottonwood has genes for disease resistance, but thale cress lacks genes for disease resistance. c. Black cottonwood and thale cress have had the same number of gene duplication events throughout their evolutionary history.
Given the following plasmid, what are the sizes of the fragments you would expect from a NotI digest?
What will be an ideal response?
A person who is heterozygous for the Huntington disease (HD) allele has offspring with someone who does not have HD. What proportion of their children will have HD?
A) 1/10 B) 1/4 C) 1/16 D) 1/8 E) 1/2
A scientist found an unweathered igneous rock that contained 0.025 g of potassium-40 and 0.075 g of argon-40. The half-life of potassium-40 is 1.3 billion years. Using the table from Figure 26.3 the age of the rock would be estimated to be
A. 1.3 billion years old. B. 2.6 billion years old. C. 0.050 billion years old. D. 0.001875 billion years old. E. 1.69 billion years old.