One organism is heterozygosis, the other is homozygous.
Organisms or genotypes that are homozygous for a specific trait and always produce offspring of the same phenotype are said to be true breeding. This means that when bred with another organism of the same genotype for that trait, all offspring will display the same characteristic.
Nope! TT is the dominant phenotype (what ever it may be) and tt is the recessive phenotype (what ever that may be).So say T is the allele for Tall plants, t is the allele for short plants. TT would be show the tall phenotype while tt would show the short phenotype. If the genotype was Tt, the phenotype would be tall as well because the T is dominant and masks the phenotype of t (short plants).
Different genotypes can result in the same phenotype through mechanisms such as genetic redundancy or epistasis. Genetic redundancy occurs when multiple genotypes can produce the same gene product, leading to the same phenotype. Epistasis occurs when one gene's expression is influenced by another gene, allowing different genotypes to result in the same observable trait.
Phenotype does not determine genotype. Actually a genotype includes an organisms entire hereditary information. A phenotype is simply the organisms actual observed properties including appearance, development and behavior.
Organisms that share genotypes share the same alleles, whereas organisms that share phenotypes share expressed traits. Sometimes multiple genes code for the same phenotype, and the classical study used to illustrate this (or at least one of them) is on Mendel's experiments on plants.Simply put, Mendel's work helped demonstrate how dominant and recessive alleles affect phenotype. When an allele is completely dominant, an organism will display the dominant phenotype whether or not it has one or two dominant alleles (assuming the alleles share the same locus). So for instance two different pea plants (this example is made up to display the concept) may have two different genotypes, one with two dominant alleles and one with a single dominant and single recessive allele; these organisms have different genotypes. However, because the dominant allele is completely dominant, both would organisms would express the same phenotype.A perhaps more eloquent explanation of the above example exists at the Mendelian inheritance article on Wikipedia.
No. It is possible for the reverse to be true, two organisms can have the same phenotype but a different genotype. This is because the phenotype is what you will see on the outside whereas the genotype is the combination of alleles and since this determines the phenotype, two organisms with the same genotype will have the same phenotype. So, basically, no. Actually 2 organisms can certainly have different phenotypes with the same genotype--this refers to the concept of penetrance. Some people can have the gene for a condition but never show symptoms. An excellent example of this is the disease neurofibromatosis. This disease has very variable penetrance in which a child of an affected parent may show no signs of the disease, but then have a child with a severe form.
Although organisms with the same physical characteristics have the same PHENOTYPE, they might have different GENOTYPE, or genetic makeup.
yes
Yes,if one has two dominant alleles and other has a dominant and a recessive allele
One way is if an allele for the gene in question is dominant. Homozygotes for the dominant allele and heterozygotes will both have the same phenotype.Organisms have the same phenotype, or physical characteristics. They do not, however, have the same genotype, or genetic makeup. If T represent tall, and t represnts short then the organism will have the genotypes TT and Tt. If you make a Punnett square you will have the same phenotype but different genotypes. Unless some weird mutation occurs....
You look at the offspring. Offspring of a heterogenous match are going to have different phenotype percentages than those of a homogenous match.
Yes, it is possible for two horses to have the same phenotype but different genotypes. Phenotype is the observable characteristics of an organism, while genotype refers to the genetic makeup. Differences in genotype can lead to variations in the genetic composition that may not be visibly apparent in the phenotype.
Different genotypes don't always change your phenotypes because of mutations
Organisms or genotypes that are homozygous for a specific trait and always produce offspring of the same phenotype are said to be true breeding. This means that when bred with another organism of the same genotype for that trait, all offspring will display the same characteristic.
The genotype of the offspring that had the same phenotype as the parents is rr or wrinkled. The phenotype for the seed shape of both parent plants is round.
Phenotype. The physical expressed characteristics of an organisms genotype is known as its phenotype. Two organisms may have the same phenotype, but different genotype depending on the dominate or recessive genes present. Just remember physical=pheno.
No, phenotype refers to the physical traits or characteristics that are observable in an organism, while genotype refers to the genetic makeup of an organism, including both the genes that are expressed and those that are not. So, while genotype influences phenotype, they are not the same thing.