A fire devastates all trees in a wide swath of forest. Populations of a species of tree-dwelling frog on either side of the burned area diverge to become separate species. This is an example of _____
Fill in the blank(s) with correct word
allopatric speciation
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Non-true-breeding hairy-leaved plants are crossed with smooth-leaved plants.
a. What genotypic and phenotypic ratios would you expect for the potential offspring? b. Suppose you perform such a cross, collect data, and do a chi-square test to aid in data analysis. How many degrees of freedom would there be? c. Suppose your chi-square value is very large (>25). What does this indicate about your experiment and/or hypothesis?
The reactants for cellular respiration are
A. carbon dioxide and glucose. B. glucose and ATP. C. oxygen and ATP. D. glucose and oxygen. E. water and ATP.
What functional differences exist between various cyclins?
What will be an ideal response?
What is the three-dimensional shape created by hybrid orbitals that are formed when a carbon atom is covalently bonded with four other atoms?
A. a flat sheet with carbon in the center B. a triangle with carbon in the center C. a cube with carbon in the center D. a tetrahedron with carbon in the center E. All of the above are possible.