Question

In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red (R) and white (W). The heterozygous genotype is expressed as pink. A pink-flowered plant (parent 1) is crossed with a white-flowered plant (parent 2). Parent's Genotype: parent 1 X parent 2

Answer 1

Answer:

The genotype of the parents are:

Pink-flowered parent: Rr (heterozygous)

White-flowered plant: rr (true plant)

Explanation:

Incomplete dominance is the pattern of the inheritance where the dominant allele does not mask the effect of the recessive allele completely and results in a mix or blend of both alleles.

Similarly, here flower color is shows incomplete dominance which means Red flowers (RR) and white flowers (rr) where R is dominant over r. So, the pink color is a heterozygous condition that represents by Rr, a mix of both alleles.

Thus, the parent genotype are :

Rr - pink flower

rr - white flower

Answer 2

Answer: The cross that will produce the most pink-flowered plant is Rw.

Explanation: If you do a Punnett square

                                                                       R        w

                                                               w   Rw       ww

                                                               w   Rw       ww

It will be Red=50% and White=50%

So, for both it is 50% so the genotype is Rw and the phenotype is red and white mixed together to have pink