Question

In one type of plant, orange petals (O) are dominant over yellow petals (o) and tall stems (T) are dominant over short stems (t). Complete a dihybrid cross for parents with the genotypes: OOTt × OoTt and answer the following in complete sentences.

Describe how you would set up a Punnett square for this cross.
List the likelihood of each possible offspring genotype.
List the likelihood of each possible offspring phenotype.


I'm having so much trouble with this, please help :(

Answer 1

make a table of possibilities and cross link this, the table provides all the possible genotypes:
OT Ot
OT OTOT OtOT
Ot OTot OtOt
oT OToT OtoT
ot OTot Otot

possible phenotypes:
orange petals with tall stems, orange petals with short stems, dark yellow petals with tall stems, and dark yellow with short stems.