Are traits controlled by a single gene?
Most traits are determined by more than one gene. For example, skin color and height are determined by many genes. Some phenotypes however, are determined by a single gene. If you exhibit the dominant phenotype, use a dash to represent the second allele.
Are most traits are controlled by more than one gene?
Polygenic Traits Many human traits are controlled by more than one gene. These traits are called polygenic traits. The alleles of each gene have a minor additive effect on the phenotype. There are many possible combinations of alleles, especially if each gene has multiple alleles.
How traits are controlled by genes?
Inherited traits are controlled by genes and the complete set of genes within an organism’s genome is called its genotype. The complete set of observable traits of the structure and behavior of an organism is called its phenotype. These traits arise from the interaction of its genotype with the environment.
What traits are controlled through genes?
Human features like height, eye color, and hair color come in lots of slightly different forms because they are controlled by many genes, each of which contributes some amount to the overall phenotype.
When a single gene control two or more traits example is?
Pleiotropy (from Greek πλείων pleion, ‘more’, and τρόπος tropos, ‘way’) occurs when one gene influences two or more seemingly unrelated phenotypic traits. Such a gene that exhibits multiple phenotypic expression is called a pleiotropic gene.
How many human traits are controlled by a single gene quizlet?
passing of characteristics from parents to offspring through their genes. How many traits are determined by a single gene. More than 9000 traits are determined by a single gene.
What is the definition of a single gene trait?
A monogenic trait is a trait produced by the effect of a gene or an allele. It is in contrast to a polygenic trait that is controlled by a polygene (multiple genes). Since the trait is produced by a single gene or allele it is less complicated compared with the trait produced by a polygene.
What is it called when a single trait is affected by more than one gene?
Polygenic Trait = A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.
When a single trait is controlled by more than a single set of alleles?
Explanation: A trait that is controlled by more than one gene is called polygenic which translates to “multiple genes”. The genes work together to make one trait. Examples are skin, eye and hair color.
When a single gene influences more than one trait it is called a Codominance B pleiotropy C polygenic D none of these?
Answer (b) pleiotropy.
Which trait is controlled by 3 or more genes?
polygenic trait
A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.
Which human traits are controlled by many genes?
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.