In African finch populations, selection pressures favor birds with bills that are ________
a. either large or small, in an example of disruptive selection
b. small, in an example of directional selection
c. large, in an example of directional selection
d. large, in an example of sexual selection
a
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The Michaelis constant
A) can be determined using the Lineweaver—Burk plot. B) is equal to twice the Vmax. C) is equal to the substrate concentration at Vmax/2. D) both choices A and C E) choices A, B, and C
What life history patterns in some rotifers are adapted to living in small bodies of water?
What will be an ideal response?
If the sugary phloem sap in a fruit tree is divided into many sugar sinks, then how will each individual fruit be affected?
A) The fruit will be small and sugary. B) The fruit will be large and sugary. C) The fruit will be small and diluted. D) The fruit will be large and diluted.
Why is fission likely to be a method of reproduction in early cells?
a. The easiest way to divide genetic material is to split it in two. b. Hypercycles that become unstable split apart. c. Modular genomes transfer well between cells. d. Physical constraints of a sphere cause it to become unstable and break when it becomes too big.