Wouldn't you get a different colored and different Carrot because orange Carrots are Hybrids? From what I know if you plant a Hybrid seed you will not really get that same plant so Would you get an orange Carrot if you planted seed from an orange Carrot?
What happens if you plant a orange Carrot seed if orange Carrots are Hybrids?
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The f1 generation will take a gene from each of two parents, so imagine the original parents were an orange and a blue and orange is dominant, you would get the gene combination Ob (Orange from one parent blue from the other)
Two plants from the f1 generation crossed, with each plant giving one of its two Ob genes gives
OO Ob OO bO bb
That means if Orange is dominant three out of four plants will grow orange and one (bb) blue.
Also two of the four will have the same genetic background as the F1 generation.
It is true that OO and bb wil not be like the f1, but they will be like the original parents, which presumably were selected for their good qualities, so it is not really true that it is not worth saving seed from f1 hybrids.
Of course these are only averages, but Gregor Mendle worked out the concept of a 'Sex factor', a discreet piece of information passed by each parent, based on counting numbers after carefully breeding pure types of dwarf and giant beans and wrinkled and smooth peas then crossing them. This was long before chromosomes were discovered, and explained the fact that a new variant didn't simply get 'absorbed', which puzzled Darwin. Some people think he cheated because his numbers work so well, but this was in the 1860's in rural Austria, industrial pollution is quite likely to mean the experiments would not repeat exactly. He lost his eyesight trying to work out what happened with the special genes in hawkweeds, the tiny parts in the flowers meant they were almost impossible to cross pollinate in a controlled way at that time. A remarkable man.
Two plants from the f1 generation crossed, with each plant giving one of its two Ob genes gives
OO Ob OO bO bb
That means if Orange is dominant three out of four plants will grow orange and one (bb) blue.
Also two of the four will have the same genetic background as the F1 generation.
It is true that OO and bb wil not be like the f1, but they will be like the original parents, which presumably were selected for their good qualities, so it is not really true that it is not worth saving seed from f1 hybrids.
Of course these are only averages, but Gregor Mendle worked out the concept of a 'Sex factor', a discreet piece of information passed by each parent, based on counting numbers after carefully breeding pure types of dwarf and giant beans and wrinkled and smooth peas then crossing them. This was long before chromosomes were discovered, and explained the fact that a new variant didn't simply get 'absorbed', which puzzled Darwin. Some people think he cheated because his numbers work so well, but this was in the 1860's in rural Austria, industrial pollution is quite likely to mean the experiments would not repeat exactly. He lost his eyesight trying to work out what happened with the special genes in hawkweeds, the tiny parts in the flowers meant they were almost impossible to cross pollinate in a controlled way at that time. A remarkable man.
Apparently orange Carrots are man made so orange Carrots are "hybrid". So what I am trying to figure is how do we still get orange carrots today?
Are all orange carrots f1?
Is this correct? > Insects pollinate the orange Carrots from the male part of the Carrot flower to the female part of that same Carrot flower and so you keep getting more orange carrots from the creation of the hybrid orange Carrot
Are all orange carrots f1?
Is this correct? > Insects pollinate the orange Carrots from the male part of the Carrot flower to the female part of that same Carrot flower and so you keep getting more orange carrots from the creation of the hybrid orange Carrot
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Greetings, welcome to the Forums.
Even if cultivated carrot roots are more orange than wild carrot roots, presumably due to artificial selection for root color or carotene content, this would not effect the heritability of the trait. Carrots with heritable genetics for an orange root phenotype would continue to have orange roots unless 1) gene flow or mutation changed the plants genetics, or, 2) the plant was grown in an environment which did not allow phenotypic expression (orange roots) of the genotype. For example nutrient-deficient soil that prevented the manufacture of carotene.
Even if cultivated carrot roots are more orange than wild carrot roots, presumably due to artificial selection for root color or carotene content, this would not effect the heritability of the trait. Carrots with heritable genetics for an orange root phenotype would continue to have orange roots unless 1) gene flow or mutation changed the plants genetics, or, 2) the plant was grown in an environment which did not allow phenotypic expression (orange roots) of the genotype. For example nutrient-deficient soil that prevented the manufacture of carotene.
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Not a hybrid, but a mutation. Both the chromosomes would pass the orange characteristic.