Question

In snapdragons, there is one allele that produces red flowers and another allele that produces white flowers. Neither allele is dominant and heterozygous individuals have pink flowers. A plant breeder decides to cross a red-flowered snapdragon with a pink-flowered snapdragon. What percentage of the offspring do you expect will have red-flowers?(Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5)

Answer 1

50

Step-by-step explanation:

Suppose R is the first allele and r is the second allele,

RR = red

Rr= pink

rr = white

Parent 1: Red = RR

Parent 2: Pink = Rr

RR X Rr :

R R

R RR RR

r Rr Rr

As evident, 50% of offspring will have RR genotype hence the red colour. R and r here show incomplete dominance where neither allele is dominant and when both of them come together they show blended trait.