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Name at least three traits that are a result of polygenic inheritance?
Wiki User
∙ 13y ago
Weight, eye color, height
Wiki User
∙ 13y ago
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What is the least prevalent mode of inheritance?
x-linked dominant inheritance
How does heredity relate to DNA?
DNA (deoxyribonucleic acid) is the chemical which contains the information which determines heredity. Every inherited trait is the result of some particular DNA sequence. There are four types of DNA base chemicals, which can be connected in any sequence, and the specific sequence, known as a gene, will result in specific traits. Genetics has a language, written with only 4 letters.
What must be true of traits that are passed down through generations?
Traits that are passed down through the generations must be either culturally or environmentally inculcated or genetically inherited (or some combination of these). Evolutionary biology concerns itself with genetically inherited traits. In the long term, for genetically inherited traits to continue to be passed down through the generations, they must be at least neutral with regard to reproductive fitness, or advantageous (i.e. they must not be subject to negative selection pressure)
Is eye color caused by genes?
Yes. As do all of your traits. Today, scientists have discovered that at least eight genes influence the final color of eyes. The genes control the amount of melanin inside specialized cells of the iris.
What do you call two different genes of a certain trait?
Two genes which govern the same characteristics are called alleles. Alleles located at the same locus on a chromosome pair determine phenotype (the expressed characteristic), at least in simple Mendelian genetics. Characteristics can also be controlled from two loci (epistatic/hypostatic) and from several loci (polygenic). There is space on the genome for 2 alleles for a certain characteristic. One is taken from each parent. For example, you might have one allele coding for black fur (B) and another for white (b). Alleles have different dominance so if the allele for black fur was dominant you have two allele combinations that would result in black fur: BB and Bb There is only one combination that could result in white fur: bb The less dominant allele is known as the recessive allele.
How does the range of phenotypes for single gene traits different from the range for polygenic traits?
ABO Single gene trait blood group alleles on humans. That is the variation, not much, and not much recombination. 3! = 6. There is posited to be at least 7 alleles for height, which is a polygenic trait. Hypothetical alleles, SMYDKECV 7! = 5040 different combinations of alleles in height polygenic traits.
What is one difference between single gene trait and a polygenic trait?
Polygenic traits result in more variation because so many more alleles are involved in the process of reproduction.
In a species of rat height is a polygenic trait. what does it mean for this trait to be polygenic?
Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be of many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. Should help students for the year 2022. (Note: May change for upcoming years) Hope it helped!
What is the difference between alleles and multiple alleles?
Alleles refer to different versions of the same gene. So a single gene can have multiple alleles. For example in fruit flies there is a single gene that controls eye color, and the eye color of the fly depends on the alleles they have for that gene (since they have two copies of every gene, being diploid). A polygenic trait refers to any inheritable trait that is controlled by multiple genes, and each of these genes can have multiple alleles. For example, eye color in humans is a polygenic trait. There are at least three different genes, each with multiple alleles, that determine eye color in humans. Polygenic traits don't follow patterns of mendelian inheritance. So in summation the difference is multiple alleles refers to different versions of one gene and polygenic traits refers to a single trait which is controlled by multiple genes (each with multiple alleles) Yes, or: Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by multiple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
What is the least prevalent mode of inheritance?
x-linked dominant inheritance
How does natural selection affect polygenic traits?
Polygenic traits occur because of genes and environment. There are usually two or more genes involved in these traits. It also takes into consideration where the organism lives, for example the fact that some hotter areas have a history of people with darker skin tones.
The name of the Money for a child when a parent dies?
inheritance, at least I think that's how you spell it
Being in a chapter 13 bankruptcy do you have to turn over money from an inheritance?
Should money from an inheritance be turned over in a chapter 13 case? the case was filed at least 12 months before the inheritance
Adoptive parents are least likely to influence the of their adopted perents?
Personality Traits
What are the following traits of a corn plant is least influenced by the environment?
"Color of kernels"
How old do you have to be to control inheritance money?
The exact age you must be to be able to control inheritance money varies by state. All states require that you must be at least 18 years of age, and in some states it is 21.
Will inheritance book 5 come?
As of now, no official announcement has been made regarding the release of Inheritance Book 5. Christopher Paolini, the author of the series, has expressed interest in returning to the world of Alagaësia, but there is no confirmed timeline for a new book.
