Question

lab: mouse genetics (two traits)
assignment: reflect on the lab active
predict offspring phenotypes
select all the offspring phenotypes that could be
produced from a bbee x bbee cross (shown
above).
black fur, red eyes
black fur, black eyes
white fur, black eyes
white fur, red eyes

Explanation:

Step1: Determine gametes

For \(BbEE\), gametes are \(BE\) and \(bE\). For \(bbee\), gamete is \(be\).

Step2: Do Punnett square

	\(BE\)	\(bE\)

Step3: Analyze phenotypes

Assume \(B -\) black fur (\(b -\) white fur), \(E -\) red eyes (no information to suggest otherwise as \(EE\times ee\) gives \(Ee\)). \(BbEe\) has black fur (dominant \(B\)) and red eyes (\(Ee\)). \(bbEe\) has white fur (\(bb\)) and red eyes (\(Ee\)).

Answer:

A. black fur, red eyes; D. white fur, red eyes