Thursday, April 30, 2009

Can someone tell me about the DNA of aggregate fruit and multiple fruit?

I was eating raspberries today and I started thinking aobut how I had heard they were aggregate fruit. A simple fruit is one from an ovary with only one pistil. Thereforeit could be pollinated by only one male plant, right? In the case of an aggregate fruit which develops from a flower with numerous simple pistils couldn't the individual pistils hypothetically be fertilized by different male plants? Would this mean that the individual simple fruits that make up a raspberry are genetically different. As if one raspberry is a collection of brother and sister fruit? What about a multiple fruit , like pineapple? A cluster of flowers produce a single fruit. If each of these flowers is fertilized individually, but they mature into a single mass does the pineapple have DNA from some of the flower fertilizations in some cells and sibling DNA in other cells or is all the DNA in every cell of the pineapple?

Can someone tell me about the DNA of aggregate fruit and multiple fruit?
yes, each pistil can be fertilized by different pollen, but generally the properties of the fruit is dependant on the genes of the mother - the flesh of the fruit is mother tissue, so the dna of the seed is not affecting this much. that is why all the apples, cherries on one tree are quite the same even it they were pollinated by different "fathers" - but if u grow the seeds in mature trees, they may differ in their various properties.
Reply:They can be pollinated independently, as a general rule.


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