Some migratory birds utilize electromagnetic receptors to navigate
____________________ Indicate whether the statement is true or false.
True
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The diversity of movement found in eukaryotic cells is propagated by the:
A. nucleus. B. mitochondria. C. cytoskeleton. D. plasma membrane.
A population of voles (small mammals) live in a shady forest. Originally, the voles are a light tan color, but then a dark brown coloration arises by a new mutation. The darker voles are harder for predators to see in the leaf litter, thus they are less susceptible to predation. After 10 generations the majority of voles in the population are the dark brown color. In the figure below, the solid red line represents the number of light colored individuals before the mutation and the black dashed line represents the number of dark brown individuals after 10 generations. What type of natural selection are the population of voles going through?
A. Directional selection.
B. Stabilizing selection.
C. Diversifying selection (disruptive selection).
D. Balancing selection.
E. Negative frequency-dependent selection.
This cycle begins when the lambda circular chromosome integrates into the host cell's DNA by
crossing over. Once integrated, the lambda genes are mostly inactive. This cycle is referred as
a. lytic cycle. b. lysogenic cycle. c. Krebs cycle. d. citric acid cycle. e. lytic or lysogenic cycle.
All of the following structures of the ear pass
on vibrations from sounds except the
a. hammer b. eardrum c. oval window d. organ of Corti e. cochlea