the genotype represents

a paired combination of genes
either a dominant or recessive gene
a given phenotype
two alleles

A genotype represents two alleles. When two alleles are paired together, they are considered a genotype. When these alleles show up physically on an organism, they are then considered the phenotype. For example, two sets of two alleles for brown hair (dominant) and blonde hair (recessive) would be Bb and BB. B being the dominant brown color and b being the recessive color reprensted by upper and lower case. The dominant color would show up so this person would then have the coding for brown hair.

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a

explanation:

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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