Answer:
The possible genotypes of the offspring when two plants heterozygous for red petals are crossed is RO × RO → RR, OR, RO, OO or
1 homozygous for red petals, 2 heterozygous for red petals and 1 homozygous for orange petals.
Explanation:
To solve the question, we note that
The red petals are dominant to the orange petals
Let R = Red and
O = Orange
Therefore we have
RO × RO
That is
R O
R RR OR
O RO OO
RO × RO → RR, OR, RO, OO
That is possible genotypes of the offspring when the heterozygous for red petals are crossed, RO × RO is RR, OR, RO, OO
Given one homozygous for red petals, two heterozygous for red petals and one homozygous for orange petals.
