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Polygenic means many genes are influencing one trait. So, the inheritance of this gives you are all sorts of combination of genes that are expressed in various phenotypes. As example think of the different heights of siblings. There are 5 to 7 genes that influence height and in the same relative environment of siblings you get many combinations of those genes which express themselves in different height same sex siblings.
What else can I help you with?
What are the different types of races?
There is no such definition or designation of "race." All humans are a single species, but there are phenotypes which are characteristic differences of expressed genetic traits. Eurasia comprises thousands of languages and peoples ranging from virtually the entire spectrum of phenotypes such as Caucasian, Mongoloid, and so on.
What is the 3 types of natural selection?
Stabilizing Selection-- The extremes are selected against.Example: height; mostly beings tend to the average height- not too many really short ones or really tall ones.Directional selection-- One extreme value is selected for.Example: speed; faster is always better so a population will tend to get faster over time.Disruptive selection-- The extremes are both selected for.This type of selection is not as common as the first two. Example: Prey-type animal with distinctive markings which the predators know will over time move away from the norm in both directions.
Does your analysis support or refute mendels hypothesis of dominant and recessive inheritance?
You are from Kerr. The answer is on the textbook. The analysis does support the hypothesis because some of the offspring's genotype is heterozygous, as they have two different alleles. They do not have the recessive traits expressed, except in organisms that are homozygous recessive. You're so welcome.
What are the ultimate cause of alleles?
To help and construct every part of your body, from bone structure, to eye color, and the thickness of your hair All because it runs through your family and you can take after so many things and so it is hard sometimes to understand but you know how like you can sometimes look like your mom and your dad too...you take after them and like you can have like your moms nose or something you know!? it really means that you take after your family. And also there are so many genes cause of who and what your family is and stuff...
What aspect of Mendel background gave him the necessary tools to discover the laws of inheritance?
He identified and developed many different true-breeding strains of pea plants, and he studied only those traits that had only two possible outcomes; such as short or tall height, and yellow or green pea color. He also prevented self-fertilization of the pea plants by using a technique called cross-pollination, so that he could control each cross.
What is Polygenic Inheritence?
Polygenic inheritance refers to the inheritance of a trait that is controlled by multiple genes, each with a small effect on the phenotype. Traits such as height, skin color, and intelligence are often influenced by multiple genes working together. This type of inheritance results in a continuous range of phenotypes rather than distinct categories.
How does polygenic inheritance differ from Mendelian inheritance?
polygenic inheritance is when more than one genes are responsible for a character/phenotype. for example human skin color. if one want to draw a pedigree for that, he will not be able to succeed. although individual genes at molecular level is inherited according to mendel's laws. and mendelian inheritance simply follows mendels laws. also the character is controlled by one gene only. for example pea plant height.
What would be your clue that a character would have polygenic inheritance pattern?
Well, honey, if you see a trait that's controlled by multiple genes, each with small effects, then you might be dealing with polygenic inheritance. So, keep an eye out for characteristics like height or skin color that show a wide range of variation in a population. And remember, genetics can be a real mixed bag, just like my collection of ex-husbands.
How does polygenic trait differ from simple inheritance?
Well polygenetic inheritiance are traits that is controlled by multiple genes, so for one trait you may have more than two gene controlling it, human eye is an example. For polygenetic inheritance you cannot do a pedigree and calculated the percentage. For mendelian inheritance it all about two alleles for one trait where one is definetly more dominant over the other, it is much simpler than the polygenic trait and can be calculated through a pedigree.
How are the word parts poly- and genic related to the meaning of the term polygenic traits?
The word part poly- means "many," and genic refers to genes. Polygenic traits are determined by multiple genes, each contributing a small effect to the overall trait. So, the terms poly- and genic in polygenic traits indicate that multiple genes are involved in determining the trait.
What is one difference between a single gene trait and a polygenic trait?
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 mulitple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
Why do some traits have so many different phenotypes?
Some traits have many different phenotypes because they are influenced by multiple genes and environmental factors. This can lead to a wide range of possible outcomes for a trait. Additionally, genetic variations and interactions can result in different expressions of a trait in individuals.
Why are there so many varied phenotypes within a species such as a human?
The phenotypes are affected by your enzymes since all metabolic activities of our bodies are down to enzymes.. Your Enzymes are proteins. They have been made from translation after transcription. Thus Your DNA got transcribed to make the enzymes.
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.
Why do human traits such as height and skin color have different phenotype?
This is because phenotypes are the physical appearance. If you had brown hair and so did I, our phenotypes, would still be different.
Why are so many varied phenotypes within a species such as human?
The phenotypes are affected by your enzymes since all metabolic activities of our bodies are down to enzymes.. Your Enzymes are proteins. They have been made from translation after transcription. Thus Your DNA got transcribed to make the enzymes.
Distinguish between parental and recombinant phenotypes?
Parental Phenotypes are when the offspring of two parents look like one of the two parents. for example, if a green wrinkled pea is crossed with a heterozygous yellow round pea the offspring are 1/4 yellow round, 1/4 green wrinkled, 1/4 yellow wrinkled, and 1/4 green round. the yellow round and green wrinkled look like the parents so they have parental phenotypes, whereas the yellow wrinkled and the green round have combinations of the parental phenotypes thus they have recombinant phenotypes.
