________ is ultimately determined by environmental exposures but is set by the basic genotype.
Fill in the blank(s) with the appropriate word(s).
Ans: The norm of reaction
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The innermost layer of the root cortex, known as the ____, is a selectively permeable barrier that helps control the
movement of water and dissolved minerals.
a. endodermis b. root cap
c. quiescent center d. pericycle e. root hairs
Filaments of a fungus that form a velvety cloak around roots or penetrate their cells aiding in the mutualistic
relationship between the plant and fungus are called ____. a. hyphae b. mycorrhizae c. root nodules d. root hairs e. Rhizobium
Which of the following is a health effect of a diet high in saturated fats?
A) increased risk of infectious disease B) decreased risk of atherosclerosis C) increased risk of heart attack D) decreased risk of stroke
Genetic drift cannot occur in the same generation as natural selection.
a. true b. false