In a certain type of waterfowl, a single pair of alleles for one gene controls the color of feathers. Three colors are observed, blue, black, and splashed white (a silver color). Crosses among these three types yield the following results: PARENTS
Black x blue
Black x splashed white
Blue x splashed white
Black x black
Splashed white x splashed white

PROGENY
Blue and Black 1:1
Blue
Blue and Splashed White 1:1
Black
Splashed White
(Lists are meant to go side by side)

1) What progeny would result from the cross blue x blue?
2) What mode of inheritance does this example represent?

You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%

What is turgor pressure, what causes it, and what does it do for a plant?