What determines an individual’s phenotype for a polygenic multifactorial trait group of answer choices?
The phenotypic pattern typical of a polygenic trait in a population is: … polygenic traits are caused by more than one gene, and multifactorial traits are caused by one or more genes as well as environmental influences.
What is a polygenic trait determined by?
In polygenic inheritance, traits are determined by multiple genes, or polygenes. Polygenic traits may express several different phenotypes, or displayed characteristics. Polygenic inheritance is a type of incomplete dominance inheritance, where the expressed phenotypes are a mixture of inherited traits.
What are polygenic multifactorial traits?
The terms of polygenic and multifactorial inheritance are sometimes used interchangeably. However, in the strict sense, polygenic refers to the sum total of many genes, whereas multifactorial also includes the interaction of environmental and genetic determinants.
What is the most common distribution pattern of phenotypes for a polygenic trait?
Polygenic traits in a population often form a bell curve distribution.
Which of the following determines the trait of an individual?
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.
What phenotype means?
The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
What term describes phenotypic features that are coded for by several genes?
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.
What produces an intermediate phenotype?
This intermediate phenotype is a demonstration of partial or incomplete dominance. When partial dominance occurs, a range of phenotypes is usually observed among the offspring. … Thus, when homozygous red flowers (A1A1) are crossed with homozygous white (A2A2), a variety of pink-shaded phenotypes result.
Why do polygenic characteristics have many phenotypes?
Why do polygenic characteristics have many phenotypes? Many genotypes are possible with multiple genes. … If each genotype corresponds to a unique phenotype, then the number of phenotypes is the same: 27 for three genes and 81 for four genes.
How does the environment interact and affect phenotypes?
Environment Can Impact Phenotype
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.