What are multifactorial traits?
Multifactorial and Polygenic Inheritance Multifactorial inheritance refers to traits that are caused by a combination of inherited, environmental, and stochastic factors (Fig. 97.21). Multifactorial traits differ frompolygenic inheritance, which refers to traits that result from the additive effects of multiple genes.
Which of the following is an example of a multifactorial trait?
Examples of Multifactorial Traits: Fingerprint patterns, height, eye color, and skin color… Eye color: iris colored by the pigment — melanin.
What is an example of a multifactorial condition?
Some common multifactorial disorders include schizophrenia, diabetes, asthma, depression, high blood pressure, Alzheimer’s, obesity, epilepsy, heart diseases, Hypothyroidism, club foot and even dandruff.
What is the difference between polygenic and 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 are 3 examples of polygenic traits?
Examples of polygenic traits include skin color, eye color, hair color, body shape, height, and weight.
What is a multifactorial trait quizlet?
Multifactorial genes/traits. traits controlled by multiple factors, or in this case, traits controlled by multiple genes and the environment. ( a trait that is controlled by multiple genes and enviornment)
What are multifactorial traits influenced by?
Multifactorial conditions tend to run in families. This is because they are partly caused by genes. Your risk for a multifactorial trait or condition depends on how close you are to a family member with the trait or condition. For example, you’re at higher risk for a trait or disorder if your brother or sister has it.
How are traits considered to be multifactorial or complex?
For many traits, expression involves multiple genes. Many such traits (eg, height) distribute as a bell-shaped curve (normal distribution). Normally, each gene adds to or subtracts from the trait independently of other genes.
What is co dominant?
= Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
What is a pleiotropic trait?
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.
Is ABO blood type a polygenic trait?
three allels (A,B and O) determine blood type. a person can have only two of the alleles, but there are three different ones found in humans. the O allele is recessive to both A and B alleles. so obviously yes , the blood type is an example of polygenic inheritance.
Which one of the following conclusions is most warranted from research on brain development?
Which of the following conclusions is most warranted from research on brain development? Educational experiences can affect students’ cognitive development throughout the elementary and secondary school years.