Evolution is the
A. slow change in the genetic makeup of a population of organisms over many generations.
B. fast change in the genetic makeup of a population of organisms over many generations.
C. slow change in the genetic makeup of an individual over a lifetime.
D. fast change in the genetic makeup of an individual over a lifetime.
A. slow change in the genetic makeup of a population of organisms over many generations.
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After reviewing the graph below, one could state that:
A. grain yield of strain 1 is less dependent than strain 2 on the nitrogen enrichment of the soil. B. at a nitrogen enrichment of 40 kg/hectare, strain 2 provides a higher yield of grain. C. nitrogen enrichment has little effect on grain yield of strain 2. D. strain 1 is the superior choice for grain yield. E. no interaction effect is observed between nitrogen enrichment and grain yield for either strain.
What evidence supports the theory of endosymbiosis for the development of cells with mitochondria and chloroplasts? (Select all that apply.)
a) the presence of circular DNA in mitochondria and chloroplasts b) the size of mitochondria and chloroplasts is similar to that of modern-day bacteria c) the double membrane around mitochondria and chloroplasts d) mitochondria and chloroplasts divide by fission, the same method observed for bacteria
Which organism(s) ferment milk lactose, producing acids that curdle the milk?
A. Streptococcus lactis and Lactobacillus B. Leuconostoc mesenteroides C. Propionibacterium D. Spirulina E. Saccharomyces cerevisiae
A trait with low survival value to the members of a population will most likely
a. undergo a series of mutations in succeeding generations. b. cause the reproductive rate of the individual to increase c. decrease in frequency from one generation to the next d. remain unchanged in frequency through many generations.