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In pea plants, individuals that are Pp for the alleles that code for flower color will have purple flowers. What is the phenotype?
The trait for tallness in pea plants is an example of a dominant trait. In Gregor Mendel's experiments with pea plants, he found that the tall phenotype (T) is dominant over the short phenotype (t). This means that a plant with at least one tall allele (T) will exhibit the tall phenotype, while only those with two recessive alleles (tt) will be short. Thus, tallness is expressed more frequently in the population when both traits are present.
When F1 pea plants are allowed to self-pollinate, the phenotype will exhibit a 3:1 ratio in the F2 generation according to Mendel's laws of inheritance. This ratio includes three plants with the dominant trait (e.g., yellow seeds) and one plant with the recessive trait (e.g., green seeds).
When Mendel bred green pea plants with yellow pea plants and all the offspring were yellow, it indicated that the yellow trait is dominant over the green trait. This means that the yellow allele masks the expression of the green allele in the offspring. As a result, even though the green allele is present, it does not manifest in the phenotype of the plants. This observation was crucial in understanding the basic principles of inheritance.
Unless the alleles are codominate (which Mendel did not have in pea plants), one will be dominate and will be what you see (phenotype) and one will be recessive and you will not see it.
In pea plants, individuals that are Pp for the alleles that code for flower color will have purple flowers. What is the phenotype?
When F1 pea plants are allowed to self-pollinate, the phenotype will exhibit a 3:1 ratio in the F2 generation according to Mendel's laws of inheritance. This ratio includes three plants with the dominant trait (e.g., yellow seeds) and one plant with the recessive trait (e.g., green seeds).
yellow peas
yellow peas
both must be tt or both must be Tt
Both yellow pea plants and green pea plants can produce pea pods containing seeds that can be cooked and eaten as a nutritious vegetable. The color of the seeds inside the pods will match the color of the parent plant's seeds, so yellow pea plants will produce yellow seeds while green pea plants will produce green seeds.
The tall pea plants have the phenotype of tall height. Their genotypes can vary depending on whether they are homozygous dominant (TT) or heterozygous (Tt) for the tall trait.
If one parent is TT (tall) and the other is tt (short), both parents are homozygous. When they reproduce, all the offspring will be Tt (tall) because of the dominant-recessive inheritance pattern. The phenotype of the offspring will be tall.
Unless the alleles are codominate (which Mendel did not have in pea plants), one will be dominate and will be what you see (phenotype) and one will be recessive and you will not see it.
When Mendel bred green pea plants with yellow pea plants and all the offspring were yellow, it indicated that the yellow trait is dominant over the green trait. This means that the yellow allele masks the expression of the green allele in the offspring. As a result, even though the green allele is present, it does not manifest in the phenotype of the plants. This observation was crucial in understanding the basic principles of inheritance.
Unless the alleles are codominate (which Mendel did not have in pea plants), one will be dominate and will be what you see (phenotype) and one will be recessive and you will not see it.
Unless the alleles are codominate (which Mendel did not have in pea plants), one will be dominate and will be what you see (phenotype) and one will be recessive and you will not see it.