A large population of butterflies lives in southeastern Asia. About half have spots and half don’t. In 1995, a rare viral illness was introduced to the population, and there was no cure. More spotted butterflies than un-spotted butterflies were killed by the illness, although the fact that they had spots had no bearing on their risk for illness. Which evolutionary mechanism is this an example of? A)Genetic drift
B)Geographic isolation
C)DNA mutations
D)Reproductive isolation

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.