Do genes determine your phenotype?

What determines a person’s phenotype?

Phenotype is the observable physical or biochemical characteristics of an individual organism, determined by both genetic make-up and environmental influences, for example, height, weight and skin colour.

How do genes control phenotype?

The genome in which a genotype is found can affect the expression of that genotype, and the environment can affect the phenotype. Genes can also be pleitropic when they affect more than one trait. … The more loci affecting the trait, the greater number of phenotypic classes.

How does DNA determine phenotype?

An organism’s phenotype (physical traits and behaviors) are established by their inherited genes. Genes are certain segments of DNA that code for the production of proteins and determine distinct traits. … If an organism inherits two of the same alleles for a particular trait, it is homozygous for that trait.

How do genes interact with each other to influence phenotype?

Any time two different genes contribute to a single phenotype and their effects are not merely additive, those genes are said to be epistatic. … Whenever two or more loci interact to create new phenotypes. Whenever an allele at one locus masks the effects of alleles at one or more other loci.

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When many genes affect a phenotype?

There is a one-to-many relation of genes to phenotypes. This relation is called pleiotropy, which is inferred from the observation that mutations selected for their effect on one specific character are often found to affect other characters of the organism.

How does DNA determine traits?

Traits are determined by genes, and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.

Why do changes in DNA cause a change in phenotype?

Changes from mutant to wild-type phenotype may be due to changes within the mutant allele itself or to changes in some other gene that will result in a suppressor allele.

How can variation within a DNA sequence produce different phenotypes?

Phenotypic variation occurs when the expression of genes is changed in response to the environment, for instance by the induction or repression of synthesis of particular enzymes.