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What is the least prevalent mode of inheritance?
Polygenic inheritance is the least prevalent mode of inheritance because it involves multiple genes contributing to a single trait and is influenced by environmental factors, making it more complex and less common than other simpler modes like Mendelian inheritance.
Why does an organism have one factor for a dominant trait and one factor for a recessive trait?
Organisms have two factors (alleles) for a trait because they inherit one from each parent. Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when both alleles are recessive. This is known as Mendelian inheritance.
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)
What characteristic is a lion least likely to pass on to its offspring?
A lion is least likely to pass on learned behaviors to its offspring, as these behaviors are developed through experience and not genetic inheritance.
What would New inheritable characteristics would least likely result from?
New inheritable characteristics that are least likely to result from random mutations include complex structural traits, such as the development of entirely new organs or systems within an organism, or drastic changes in fundamental genetic information. Such changes would require coordinated and precise alterations to multiple genes, which are less likely to arise from random mutations alone.
What is the least prevalent mode of inheritance?
Polygenic inheritance is the least prevalent mode of inheritance because it involves multiple genes contributing to a single trait and is influenced by environmental factors, making it more complex and less common than other simpler modes like Mendelian inheritance.
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 traits that are controlled by more than 1 gene?
Breathing, for one. Mindfulness is another. Respiration is the best example of this when it is considered to be a single trait. There are many less complex instances, yet all are 'highly biochemically involved'.
How many factors for every trait must a plant (or animal or human) have?
Each trait in a plant, animal, or human is typically influenced by multiple factors, particularly genes. In diploid organisms, traits are usually determined by two alleles (one from each parent), meaning there can be at least two factors for each trait. However, many traits are polygenic, involving multiple genes, which can result in a wide range of factors influencing a single trait. Therefore, the number of factors can vary significantly depending on the complexity of the trait being examined.
Why does an organism have one factor for a dominant trait and one factor for a recessive trait?
Organisms have two factors (alleles) for a trait because they inherit one from each parent. Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when both alleles are recessive. This is known as Mendelian inheritance.
The name of the Money for a child when a parent dies?
inheritance, at least I think that's how you spell it
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.
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
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)
