Question

A plant shows incomplete dominance in flower color. Red flowers are homozygous dominant, white flowers are homozygous recessive, and pink flowers are heterogeneous. Two heterogeneous plants reproduce.
There is a _____percent chance that the offspring will have red flowers.

Answer 1

Do a punnett square and it is 25% i believe

Answer 2

Answer:

There is a 25 % percent chance that the offspring will have red flowers.

Explanation:

Let the genotype of parent plant with homozygous dominant red flowers be "RR"

Let the genotype of parent plant with homozygous recessive white flowers be "rr"

Thus the genotype of parent plant with heterogeneous  pink flower will be "Rr"

Due to incomplete dominance, a recessive allele also expresses its trait when both dominant and recessive allele occur together.

Here two heterogeneous plants with genotype "Rr" reproduce. The offsprings produced are shown in the punnet square table as given below -

R r

R RR Rr

r Rr rr

The genotye "RR" will have red flower

Thus out of 4 offspring only one is having red color flower.

The percent chance that the offspring will have red flowers is

$\frac{1}{4} * 100\\= 25$%