Genes code for all genetic physical traits, so allele combinations code everything from metabolism rate to pigment coloring. Everything from the shape of your fingernails to whether you're more likely to get Heart disease is an expression of an allele combination.
The organism's genotype is the actual set of alleles present in its genes.
The organism's phenotype is the traits physically observed as a result of having a particular genotype.
This is a nonsense question, although it might appear like you know what you're asking. Get a dictionary out and check the meaning of "allele". If you don't get your answer, come back here.
what are the external pyhsical feature of an organism
pheonotype
Phenotype
The physical trait exhibited by an organism's genes is called the phenotype. (As opposed to the genotype, which refers to the alleles themselves.)
The outward appearance is usually called the phenotype. In contrast the alleles present in the cells is called the genotype.
No. They are present but not expressed (seen). Only the dominant alleles are expressed.
The presence of more than two alleles for a trait is known as probility. There might be one which is dormant and the others which are recessive.
Phenotype
Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.
The physical trait exhibited by an organism's genes is called the phenotype. (As opposed to the genotype, which refers to the alleles themselves.)
The outward appearance is usually called the phenotype. In contrast the alleles present in the cells is called the genotype.
Is one whose trait always shows up in the organism when the allele is present
You are supposed to have 2 alleles in a single nucleus and if not there can be a disorder i believe.
No. Genotype is the combination of genes present in an organism. It consists of alleles whose visible characteristics is called phenotype. An organism's phenotype is visible and not the genotype as you just can't see a person and tell what kind of genes are present in the organism.
No. They are present but not expressed (seen). Only the dominant alleles are expressed.
Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.
Hereditary constitution, also known as the genetic constitution isthe particular alleles at specified loci present in an organism.
An organism is homozygous for a particular gene when identical alleles of the gene are present on both homologous chromosomes. (see related link)
When the alleles present for a trait are the same, it is called Homozygous