A pure black feathered chicken is crossed with a pure white feathered chicken and produces offspring with black and white speckled feathers. What are the chances of the offspring producing all white feathered chickens if you cross 2 black and white feathered chickens? Give the genotypic ratio.

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome

What kinds of molecules can pass through the cell membrane without any problem?