Physical traits are mainly determined by a person’s environment; personality traits are determined by both a person’s genes and environment. B. Physical traits are mainly determined by a person’s genes; personality traits are determined by both a person’s genes and environment.Click to see full answer. Simply so, what determines the traits of offspring?A trait is a characteristic, such as color or size, that is inherited by an offspring from its parents. The genes that control a trait come in pairs, one gene from each parent. This combination, of the two genes that determine the trait, is called a genotype. Each letter in a gene pair stands for one form of the trait.Similarly, what is variation of traits? The variation and distribution of traits in a population depend on genetic and environmental factors. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis. Herein, what determines the traits of offspring quizlet? An individual’s unique characteristics are determined by factors that are passed from parent to offspring. How are different forms of a gene passed to offspring? Traits can be controlled by incomplete alleles and codominant alleles, or by genes with more than two possible alleles.Why do organisms look different from each other?All the cells contain the same genetic material and all of them are from one original cell that started as a fertilized egg, but they look different and act different from one another. This is differentiation. Scientists still do not understand perfectly why cells in the same organism decide to differentiate.