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Name: Do polygenic traits also come under non-allelic gene interactions? In
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Description: Do polygenic traits also come under non-allelic gene interactions? In non-allelic gene interactions, there are many genes involved and that is the same case with traits involving polygenic inheritance? But when I read the salient features of non-alle

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Do polygenic traits also come under non-allelic gene interactions? I

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter20: Chromosomes And Human Genetics

Section: Chapter Questions

Problem 7CT: The following pedigree shows the pattern of inheritance of red-green color blindness in a family....

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raccoons may have wide, medium-sized, or narrow bands around their tails. They may also havethe habit of washing all, or some of their food, or do not wash their food at all. a) assign genotypes to the phenotypes mentioned (see attached table) b. What mode of inheritance would most likely be exhibited by these traits if crosses were made? c. If two raccoons with medium-sized tail bands and have the habit of washing some of theirfoods will be crossed, what is the probability of having F1 raccoons with: c.1 wide tail bands that won’t wash any of their food? c.2 the same genotype as the parent raccoons? d. If a raccoon with a wide tail band that washes only some of its food is crossed with a raccoonwith a narrow tail band that doesn’t wash any food, what percentage of their offspring wouldbe medium-tailed and washes all its food? Show COMPLETE cross.
Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that homozygote pp exhibits recessive epistasis over the seed color pathway, converting a white pigment into yellow, which then becomes orange in the presence of a Q allele, or red in the presence of R. Individuals with both Q and R alleles show pink seeds. In a cross of PpQqRr individuals with ppqqrr individuals, what is the ratio of white-seeds to red seeds? а. 1:4 b. 2:3 с. 1:1 d. 4:1 e. 1:5
The following pedigree shows the pattern of inheritance of red-green color blindness in a family. Females are shown as circles and males as squares; the squares or circles of individuals affected by the trait are filled in black. What is the chance that a son of the third-generation female indicated by the arrow will be color blind if the father is not color blind? If he is color blind?
Duroc Jersey pigs are typically red, but a sandy variation is also seen. When two different varieties of true-breeding sandy pigs were crossed to each other, they produced F1 offspring that were red. When these F1 offspring were crossed to each other, they produced red, sandy, and white pigs in a 9:6:1 ratio. Explain this pattern of inheritance in terms of number of genes, and any allele or gene interactions.
Given that 5 phenotypes of B, R, Y, G, and W are possible for a trait, the results of crossing parents of unknown genotypes and known phenotypes are shown below. Each percentage represents the percent of progeny with each phenotype. Similar to how the alleles A, B, and O may result in four phenotypes due to combination of codominance and dominance. What is the likely inheritance model created from a combination of different types of dominances? G x G → 100% G G x R → 50% G, 50% R G x B → 40% B, 30% R, 20% G, 10% Y G x W → 25% G, 75% R G x Y → 50% G, 50% Y R x B → 50% R, 50% B R x W → 10% B, 5% R, 50% W, 25% G, 10% Y R x Y → 60% B, 40% Y R x R → 100% R B x W → 75% W, 12.5% B, 12.5% Y B x Y → 40% B, 20% W, 40% Y B x B → 40% B, 22.5% W, 12.5% R, 22.5% Y, 7.5% G W x Y → 60% Y, 40% W W x W → 100% W Y x Y → 100% Y
The ability to detect the bitter taste of Phenylthiocarbamide (PTC) is inherited. “Tasting” is controlled by a dominant allele, while “non-tasting” is recessive PTC paper placed in your mouth can determine if you are a “taster” or a “non-taster”? Let's assume that you are a "taster". What possible genotypes could produce your phenotype? If you produced children with a "non-taster", what genotypic and phenotypic ratios would be expected in your offspring?
Red-green color blindness is inherited as an X-linked recessive (Xc). If a color-blind man marries a woman who is heterozygous for normal vision, what would be the expected phenotypes of their children with reference to this character? In your answer, specify in your phenotype descriptions the gender of the children. (For example, don’t just say 75% of the children would be colorblind – you would instead say 100 % of the daughters would be colorblind and 50% of the sons would be colorblind. Note that this is not a correct answer; it is just to give you an idea of how to explain the correct phenotypes of the cross.)___
In Shorthorn cattle, coat color is controlled by a single gene thatcan exist as a red allele (R) or a white allele (r). The heterozygotes (Rr) have a color called roan that looks less red than theRR homozygotes. However, when examined carefully, the roanphenotype in cattle is actually due to a mixture of completelyred hairs and completely white hairs. Should this be calledincomplete dominance, codominance, or something else?Explain your reasoning
In Labrador retrievers, two genes determine fur color: the E gene and the B gene. Black fur (B) is dominant to brown fur (b). However, the presence of (ee) will overshadow and create a puppy with yellow fur. Create a Punnett square crossing 2 Labs that are heterozygous for both genes. What are the resulting phenotypes? Don’t forget to take epistasis into account!
Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The homozygous recessive phenotype has sickle shaped red blood cells that cause anemia and often death if untreated. If an unaffected father and mother move to the United States from Sub-Saharan Africa and several of their offspring have sickle cell anemia, what do we know about both parents' genotypes? One is homozygous recessive, the other is heterozygous They are both heterozygous They are both homozygous recessive One is homozygous dominant, the other is heterozygous
Picture yourself sitting at the dinner table with your family. You start comparing everyone's toes (we've all been there...). A longer second toe is dominant over having a longer first toe, which is a recessive trait. It is observed that both of your parents have longer second toes. Create one or more Punnett Squares to demonstrate the possible phenotypic and genotypic ratios of you and your siblings (the first filial generation). Using one or more Punnett Squares compare the possible phenotypic and genotypic ratios if the long second toe trait followed Mendelian inheritance. (Include ALL the steps of a Genetics problem)
Picture yourself sitting at the dinner table with your family. You start comparing everyone's toes (we've all been there…). A longer second toe is dominant over having a longer first toe, which is a recessive trait. It is observed that both of your parents have longer second toes. Create one or more Punnett Squares to demonstrate the possible phenotypic and genotypic ratios of you and your siblings (the first filial generation). Using one or more Punnett Squares compare the possible phenotypic and genotypic ratios if the long second toe trait followed Non-Mendelian inheritance.