The results of the Lenski and Travisano experiment on cells in 12 replicate lines of E. coli illustrate the fact that:
a. evolution by natural selection is sometimes significantly affected by chance events such as random mutations and the order in which they happen.
b. evolution by natural selection is often a predictable, repeatable process.
c. A and B.
d. Neither of the above.
C
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Choose the true statements about the role of genome analysis in crop improvement. Check all that apply.
_____ Conservation of synteny will hinder our ability to find agriculturally important genes in plants. _____ Arabidopsis is being genetically modified as a crop plant. _____ Sequencing of the rice genome was important because it is related to many other cereal crop plants. _____ Insertion of genes from beneficial microbes into plant genomes can be used to improve crop yields.
The rate at which an animal consumes energy at rest is called _______.
A. glycogenolysis B. gluconeogenesis C. the basal metabolic rate D. rumination E. fermentation
The hierarchy of endocrine glands that control the release of sex steroid hormones is ____
a. hypothalamus, posterior pituitary, gonads b. hypothalamus, anterior pituitary, gonads c. anterior pituitary, hypothalamus, gonads d. posterior pituitary, hypothalamus, gonads e. anterior pituitary, posterior pituitary, gonads
The substance that is secreted by a bacterial pathogen is known as ___________.
A. exotoxin B. siderophores C. endotoxin D. chlamydia E. Coxiella