Which of the following is incorrect regarding Mendelian characters in $Pisum$ $sativum$?

Distinguish between: Test Cross and Back Cross.

Mendel observed that all $F_1$ progeny plants:

Select the incorrect statement regarding Gregor Mendel.

In a monohybrid cross of plants with red and white flowered plants,Mendel got only red flowered plants. On self-pollinating these $F_1$ plants,he got both red and white flowered plants in a $3:1$ ratio. Explain the basis of using $RR$ and $rr$ symbols to represent the genotype of plants of the parental generation.

The cross used to determine whether a dominant phenotype is homozygous or heterozygous is called ......