Researchers studying blind cave fish that lack eyes found that crossing two pure-bred fish from the same cave gave only blind progeny. However, when they crosses two pure-bred cave fish from separate caves, all the progeny were able to see. From this result, they can conclude about the mutations which cause blindness in those cave fish in different caves are:

A. Located in separate genes
B. Display epistasis where one gene masks another
C. Located in the same gene
D. Located in two separate genes that must be right next to each other on the same chromosome
E. Form an allelic series in the same gene

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?

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms

19. a cell is viewed under a microscope and is found to have two nuclear envelopes and spindles that appear to be breaking apart. which phase of mitosis is the cell most likely in? a. metaphase b. prophase c. telophase d. anaphase