A scientist was observing the fate of several cells during the development of a chicken. The cells all started out as the same type of cells that were undifferentiated and not specialized. What type of cells were these beginning cells?
A. Stem cells
B. Differentiated cells
C. Plant cells
D. Somatic cells

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

Name the glands associated with human digestive system