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Gene flow
Alleles
Enviroment, development, and behavior are all factors besides alleles that can affect phenotypes.
Alleles are the specific form of a gene e.g. gene for 'eye colour, allele for 'blue eyes'. Therefore the alleles are in the genes.
they both show something about appearance.
alleles
Different forms of a gene are called alleles. Genes are the ones that influence the traits that will be inherited in the DNA.
Different versions of the same gene are called
Genes and alleles are related because alleles are inside a gene. Genes are made up by alleles. A gene is DNA. The allele is like piece of DNA inside a gene.
It's the other way around: natural selection is the natural process that causes the frequencies of occurence of alleles in the population gene pool to shift.
nutrition and gene factors
Gene flow
The alleles are the different forms of the gene. This is simplified, but an example might be, if the gene is "eye color," the alleles would be "green, blue, brown, etc." The variations in the gene are the alleles.
That depends on the gene: some genes have only a few alleles, some genes have hundreds or even thousands of alleles.
Alleles
The different molecular versions of the same gene are called alleles.
Alleles are alternate forms of the same gene. A gene is the basic physical unit of heredity that is passed on from a parent to their children.