Wednesday, April 29, 2009

The offspring from a cross between a red snapdragon and a white snapdragon are pink. How is this possible?

All of the offspring resulting frin a cross between a red snapdragon and a white snapdragon are pink. What is a possible explanation for this?

The offspring from a cross between a red snapdragon and a white snapdragon are pink. How is this possible?
I'm not totally sure on this, just guessing what my mum has told me, and seeing how she gardens a lot, I'll assume it's true: The red and white seeds can grow together, to form a hybrid, adding a percentage of both colors to form pink. Hope it helps!
Reply:red and white makes pink.
Reply:Probably same reason a White man and a Black woman will have children that are Brown like they more Hispanic. Mix the same amount of Red paint with White paint and see what color it turns. IF, you want a lighter pink snapdragon, cross a white and pink. IF, you want a darker pink, cross red with pink. This how they have the many different Colors of all types of flowers.
Reply:it depends on which trait is the dominating trait, all that you have to do is to create a punnette square.
Reply:Like any organism that uses DNA, there are two strands of genes. In the case of flowers, a color gene is on each strand. A color gene may be dominant, meaning that is the one that gets expressed even if the other color gene is not the same, or it is recessive, meaning it doesn't get expressed unless there is a gene for that color on both strands.





Sometimes, the color genes are neither dominant or recessive. So if a plant has one gene for red and another for white, the result is a blend of colors, in this case, pink.
Reply:If the trait was codominant, some of the flowers (on the same plant) would be red and some would be white. This trait shows INCOMPLETE DOMINANCE. In codominance, both are expressed equally, but that is not the case in this scenario. The alleles for flower color are both expressed to some degree, resulting in a blend of the dominant and recessive phenotypes. In snapdragons, the R allele codes for some red pigment, but not enough to make the flower deep red by itself. Pure white snapdragons have two white R'R' alleles. Heterozygous snapdragons have one red (R) and one white (R') allele. They has a pink phenotype because the single R allele alone cannot make enough pigment for pure red color.
Reply:This is due to 'co dominance'. If a black labrador dog breeds with a golden labrador, the puppies will be either black or golden. This is due to dominance where one gene is dominant over another. Co dominance occurs where both alleles (types of the same gene) are equally dominant in the heterozygous condition.





Folks, please don't answer if you do not know the correct answer.
Reply:Red + White = Pink.


No comments:

Post a Comment