Food chains rarely have more than three levels of consumers because
a. the animals are too large to search for prey.
b. the growing season of plants is not long enough.
c. pyramids do not go that high.
d. the amount of energy available is too small.
e. humans intervene.
D
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The nonmoving joints that hold the teeth in their sockets are examples of what kind of joints?
a. synovial b. fibrous c. cartilaginous d. hinge e. pivot
What is the formula/summary equation for photosynthesis?
What will be an ideal response?
Knockout experiments involving __________ genes in fruit flies (Drosophila melanogaster) revealed local controls over gene expression.
Fill in the blank(s) with the appropriate word(s).
In mice, the allele for colored fur (C) is dominant to the allele for albinism (c). The allele for normal behavior (W) is dominant to that for waltzing movement (w). Give the probable genotypes of the parents if a colored normal crossed with a white waltzer produced 10 colored normal, 8 colored waltzers, 2 white waltzers, and 11 white normal.
A. Cc Ww x cc ww B. CC Ww x cc Ww C. Cc Ww x Cc Ww D. CC ww x cc ww E. Cc Ww x Cc ww