Gregor Mendel's principles of inheritance can be applied to tomato plants. Tomato plants can produce either red fruit or yellow fruit. A scientist crossed tomato plants that always produce red fruit with tomato plants that always produce yellow fruit. Symbol R R\,R represents the dominant allele. Symbol r r\,r represents the recessive allele.
Which is the genotype of the tomato plants produced from this cross?
RRRRRR
rrrrrr
RrRrRr
RYRYRY
