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Because those alleles segregate, or seperate, and combine again to make different alleles, thus making different phenotypes.

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14y ago

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Why isn't it possible to have more genotypes than phenotypes?

I think you have the question backwards, "Why isn't it possible to have more phenotypes than genotypes?" There are always more or an equal number of genotypes relative to phenotypes. The phenotype for a simple dominant/recessive interaction (for example) T for tall and t for short where TT is tall, Tt is tall and tt is short has three genotypes and two phenotypes. If T and t are co-dominant then TT would be tall, Tt would be intermediate and tt would be short. (Three phenotypes and three genotypes.)


Which genotypes have dominant phenotypes?

The genotypes in which one or more alleles is dominant.


Can phenotypes OB produce genotypes As?

No.


Is it true or false that a natural selection acts on phenotypes not genotypes?

It doesn't. Phenotypes are viable or not in a given environment, and this influences whether the corresponding genotypes get passed on. Selection works on genotypes via the effects of their expression, their phenotype. The answer you may be looking for is that phenotypes maladapted to their environment have less babies, and pass on less copies of their genes. "Natural selection" is the whole process over generations. "Selection" may refer to misadapted bodies/phenotypes reproducing less due to illness, hunger, bad quality territories, dying earlier, etc.


What genotype is produced by the phenotype B?

Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.


Does natural selection act on genotypes?

Indirectly, yes it does. But it can only act on genotypes through their phenotypes.


How can the diagram be used to identify the genotypes and phenotypes of offspring?

The diagram can be used to predict the genotypes and phenotypes of offspring by following the inheritance patterns of the parents' traits. By analyzing the alleles passed down from each parent, one can determine the possible combinations of genotypes and corresponding phenotypes that the offspring may inherit.


What polygenic trait can have many possible genotypes and -?

Many possible genotypes, producing ,any possible phenotypes.


Why does natural selection work on organisms phenotypes rather than their genotypes?

This is backward, natural selection works on genotype not phenotype.


How are the genotype and phenotype of parents related to the genotype and phenotypes of offsprings?

The parents can pass on only the alleles of their genotypes to their offspring. Therefore, the offspring genotypes and phenotypes are dependent solely upon the alleles inherited from the parents.


Describe how phenotypes can be used to predict genotypes in a pedigree?

By observing the phenotypes of individuals in a pedigree (such as their physical characteristics or traits), one can infer the genotypes that may be responsible for those traits. By looking at patterns of inheritance within the pedigree, such as autosomal dominant, autosomal recessive, or X-linked inheritance, one can make educated guesses about the genotypes of individuals based on their observed phenotypes. However, the presence of genetic variability, incomplete penetrance, or phenocopies can complicate the prediction of genotypes solely based on phenotypic information.


What is the name of the chart that shows possible phenotypes and genotypes and genotypes?

The chart you are referring to is called a Punnett square. It is used to predict the possible genotypes and phenotypes of offspring resulting from a genetic cross between two individuals.