The gut of a vertebrate is often described as an elongated tube consisting of four layers of different cell types.
which of the following represents the correct order of those layers, from innermost (lumen-facing) to outermost?

a. submucosa, cartilage, mucosa, endoplasmic reticulum
b. smooth muscle layers, submucosa, mucosa, cartilage
c. cartilage, smooth muscle layers, mucosa, circular muscle
d. mucosa, submucosa, circular muscle, longitudinal muscle
e. cartilage, mucosa, endoplasmic reticulum, submucosa

Is a hamster and guinea pig part of the same species ?

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).