This is a required component of the grade 9 science program for WOSS Oakville
Saturday, November 11, 2006
Describe the ideas of dominant and recessive traits with examples.
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Anonymous
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Gregory Mendel first discovered dominant and recessive traits, using an experiment involving the cross-polination of two different types of peas. Mendel said that when two cells are cross polinated, there will always be a dominant cell, which has a more dominantand agressive nature, and a recessive cell, that could easily be changed or influenced by a cell with an agressive nature. Mendels experiment involved a yellow, smooth pea, and a green wrinkly pea. When Mendel cross-polinated these two peas, the green pea became more and more like the smooth, yellow pea. The yellow pea was the dominant pea, which took over the recessive, green pea.
We all contain dominant and recessive traits which are two types of genes. These two genes are very different but are often confused. You have two copies of each gene; one from you mother and one from you father. One will become dominant and the other will become recessive. First to get the idea of each type of trait here are some examples; some dominant traits could be straight hair, broad lips, blue eyes, Hitchhikers thumb, and unattached earlobes. The recessive traits could be curly hair, thin lips, brown or green eyes, normal thumb, and attached earlobe. The first traits are dominant because they are the traits that are visibly appearing on you. The dominant traits take over the other traits, dominating over them giving you your characteristics. Recessive traits recede into the background, unseen. They are still present in your genes but not used. Recessive genes can be passed on and shown up after a few generations as a dominant gene. If both parent give you a recessive trait, the trait will become visible. We all contain these traits but the hard part is telling which of your genes and traits you will pass on.
We all contain dominant and recessive traits which are two types of genes. These two genes are very different but are often confused. You have two copies of each gene; one from you mother and one from you father. One will become dominant and the other will become recessive. First to get the idea of each type of trait here are some examples; some dominant traits could be straight hair, broad lips, blue eyes, Hitchhikers thumb, and unattached earlobes. The recessive traits could be curly hair, thin lips, brown or green eyes, normal thumb, and attached earlobe. The first traits are dominant because they are the traits that are visibly appearing on you. The dominant traits take over the other traits, dominating over them giving you your characteristics. Recessive traits recede into the background, unseen. They are still present in your genes but not used. Recessive genes can be passed on and shown up after a few generations as a dominant gene. If both parent give you a recessive trait, the trait will become visible. We all contain these traits but the hard part is telling which of your genes and traits you will pass on.
Dominant and recessive traits are characteristics that reside in our genes. These traits decide what each individual person looks and acts like. Dominant traits will always happen. They are automatically given to the child. Recessive traits are traits that will have a small chance of being passed down to the child. These traits are made from the divison of cells and the divison of chromosomes.
5 comments:
Gregory Mendel first discovered dominant and recessive traits, using an experiment involving the cross-polination of two different types of peas. Mendel said that when two cells are cross polinated, there will always be a dominant cell, which has a more dominantand agressive nature, and a recessive cell, that could easily be changed or influenced by a cell with an agressive nature. Mendels experiment involved a yellow, smooth pea, and a green wrinkly pea. When Mendel cross-polinated these two peas, the green pea became more and more like the smooth, yellow pea. The yellow pea was the dominant pea, which took over the recessive, green pea.
Just a test
We all contain dominant and recessive traits which are two types of genes. These two genes are very different but are often confused. You have two copies of each gene; one from you mother and one from you father. One will become dominant and the other will become recessive. First to get the idea of each type of trait here are some examples; some dominant traits could be straight hair, broad lips, blue eyes, Hitchhikers thumb, and unattached earlobes. The recessive traits could be curly hair, thin lips, brown or green eyes, normal thumb, and attached earlobe. The first traits are dominant because they are the traits that are visibly appearing on you. The dominant traits take over the other traits, dominating over them giving you your characteristics. Recessive traits recede into the background, unseen. They are still present in your genes but not used. Recessive genes can be passed on and shown up after a few generations as a dominant gene. If both parent give you a recessive trait, the trait will become visible. We all contain these traits but the hard part is telling which of your genes and traits you will pass on.
Jazmin Welch
We all contain dominant and recessive traits which are two types of genes. These two genes are very different but are often confused. You have two copies of each gene; one from you mother and one from you father. One will become dominant and the other will become recessive. First to get the idea of each type of trait here are some examples; some dominant traits could be straight hair, broad lips, blue eyes, Hitchhikers thumb, and unattached earlobes. The recessive traits could be curly hair, thin lips, brown or green eyes, normal thumb, and attached earlobe. The first traits are dominant because they are the traits that are visibly appearing on you. The dominant traits take over the other traits, dominating over them giving you your characteristics. Recessive traits recede into the background, unseen. They are still present in your genes but not used. Recessive genes can be passed on and shown up after a few generations as a dominant gene. If both parent give you a recessive trait, the trait will become visible. We all contain these traits but the hard part is telling which of your genes and traits you will pass on.
Jazmin Welch
Dominant and recessive traits are characteristics that reside in our genes. These traits decide what each individual person looks and acts like. Dominant traits will always happen. They are automatically given to the child. Recessive traits are traits that will have a small chance of being passed down to the child. These traits are made from the divison of cells and the divison of chromosomes.
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