What is the characteristic that is controlled by the genes?

What is the characteristic that is controlled by the genes?

A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype. The outward expression of the genotype is called the phenotype.

What is multiple gene character?

Polygenic inheritance, in simple terms, implies a character or phenotypic trait, which is regulated by more than one gene. In biology, it refers to the quantitative inheritance wherein two or more independent genes additively affect a single phenotypic trait.

Which of the following traits in humans are controlled by Polygenes?

In humans, height, skin color, hair color, and eye color are examples of polygenic traits. Type-2 diabetes, coronary heart disease, cancer, and arthritis are also deemed as a polygenic. However, these conditions are not just genetic since polygenes can be influenced by environmental factors.

Which trait is normally controlled by multiple alleles but not multiple genes?

Which Trait Is Normally Controlled By Multiple Alleles But Not Multiple Genes? The ABO blood group in humans is a trait controlled by a single ABO gene with three types of alleles (multiple alleles) are seen.

When single character is controlled by two or more genes is called?

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color and weight. Polygenes exist in other organisms, as well.

Which of the following trait is controlled by multiple alleles in humans quizlet?

Human blood type is controlled by a gene with multiple alleles. There are four main blood types: A,B,AB, and O. Three alleles control the inheritance of blood types.

What are the main difference between polygenes and Oligogenic characters?

As adjectives the difference between oligogenic and polygenic. is that oligogenic is (genetics|of a trait) determined by but a small number of genes while polygenic is (genetics) controlled by the interaction of more than one gene.

How are quantitative traits controlled by multiple genes?

Quantitative traits: where the trait has a continuous phenotype controlled by additive alleles at multiple genes. This means that the trait is not controlled by just one gene with several alleles, but MULTIPLE genes (polygenic inheritance), each of which can have multiple alleles.

How are phenotypic characteristics controlled by one gene?

Genes and Their Alleles. Some phenotypic characteristics are controlled by just one gene. However, this one gene may have various forms called alleles. Each human possesses two alleles for genes that are on non-sex chromosomes (somatic chromosomes), even if that gene may have multiple alleles that exist in a population of people.

How are the characteristics of a gene determined?

The trait is one of the characteristics determined by one or more genes. Abnormal genes and genes that are formed due to new mutations also result in certain traits. Genes vary in size depending on the code or the protein they produce. All cells in the human body contain the same DNA.

Which is true for genes that exhibit complete dominance?

This is true for genes that exhibit what is called complete dominance. Simple inheritance describes phenotypic characteristics that appear as either one of two forms. They may be determined by just one gene or more than one gene, but the inherited characteristic is either there or not.