Gene flow counters the effects of mutation, __________________, and genetic drift.
Fill in the blank(s) with the appropriate word(s).
natural selection
Biology & Microbiology
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What is the key concept addressed by the question?
What will be an ideal response?
Biology & Microbiology
Stromatolites are
A. layered rocklike structures formed by cyanobacteria. B. the earliest known arthropods. C. autotrophs living around deep sea vents. D. heterotrophs found in marine environments. E. fossilized coral reefs.
Biology & Microbiology
Enzymes that are always present, regardless of the amount of substrate, are ________.
A. regulated enzymes B. endoenzymes C. exoenzymes D. constitutive enzymes E. apoenzymes
Biology & Microbiology
The head of a sperm is covered by the ________, which contains enzymes that help penetrate the layers of cells surrounding the egg
Fill in the blank(s) with correct word
Biology & Microbiology