The type of natural selection in which the mean value of a trait is shifted toward one extreme is called ________ selection
Fill in the blank(s) with correct word
directional
Biology & Microbiology
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The lipids that cannot be synthesized by the liver are classified as ____
a. saturated fats b. unsaturated fates c. essential fatty acids d. cholesterol e. trans fatty acids
Biology & Microbiology
Why are some mutations of Ras associated with cancer?
A. Ras binds to growth factor receptors. B. Ras is a type of G protein. C. Ras is part of the MAP kinase signal transduction pathway. D. Ras alters gene expression.
Biology & Microbiology
Describe how mutations can lead to whole populations of bacteria becoming resistant to certain antibiotics
What will be an ideal response?
Biology & Microbiology
Four of the following are associated with mushrooms. Which one is the exception?
a. Gills b. dikaryotic hyphae c. nuclear fusion d. Meiosis e. flagellated spores
Biology & Microbiology