Upon crossing a true breeding red-flowered plant with a true breeding white-flowered plant all of your?

offspring are pink! Why?

Upon crossing a true breeding red-flowered plant with a true breeding white-flowered plant all of your?
The F1 will be all pink due to the fact that each offspring has one red and one white allele which makes a pink phenotype.



If two alleles have an incomplete dominance relationship, the phenotype of the heterozygote will be intermediate between the phenotypes of the two homozygotes. This is often described as "blending," though the alleles themselves do not blend. The phenotype of looks like the two traits have blended together. One of the various genes which control flower color has two alleles, one for red flowers and one for white flowers. The two homozygous plants will produce red and white flowers, respectively. But the heterozygote will produce pink flowers--as if the two homozygous conditions were blended together like paint. In this case, the actual flower color (phenotype) probably results from varying amounts of production of the red pigment. The homozygous red plant produces a lot of the pigment, the homozygous white plant produces none of the pigment, and the heterozygote produces half as much as the homozygous red. There is no dominant allele here.
Reply:incomplete dominance i think? im not sure, i learned this like a long long time ago.
Reply:make a puget square and you will see.
Reply:that phenomenon is called incomplete dominance or no dominance, red and white are either dominant... so the traits blend...
Reply:if i am not wrong this is because of incomplete dominance in the plant.

a true red flowering plant has two alleles say RR and a true white flowering plant has alleles say WW. so when you construct a punnet square there are 4 analogous combinations RW. Therefore the plant is pink due to the alleles. i hope i am correct because i have not touched this for months =)

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