#Question id: 11770
#Section 1: Ecology
Natural selection in an animal population results in narrowing of the range of phenotypic variation but no change in the average phenotype. What kind of selection is this population experiencing?
#Question id: 9212
#Section 2: Evolution
Burning fossil fuels releases oxides of sulfur and nitrogen. These air pollutants can be responsible for ________.
#Question id: 3270
#Section 2: Evolution
Heterozygote advantage should be most closely linked to which of the following?
#Question id: 4598
#Section 2: Evolution
Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that ________.
#Question id: 10612
#Section 1: Ecology
dN/dt = rN (K-N/K )
The logistic equation above is used to describe therate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. Which of the following value of N showing maximum growth rate?
( K= 420, r =.05)