1. It's a very well known fact that most dragons do not breathe fire, and it's also well known that alleles that enable fire breathing are recessive to the wild-type Sweet Breath phenotype. However, it's unclear how many different genes when mutated cause the fire breathing phenotype. To answer this guestion you use four different strains of dragon and perform a series of crosses. Your strains are the Hungarian Horntail (Strain A), the Norwegian Ridgeback (Strain B), the Romanian Longhorn (Strain C), and the Swedish Shortsnout (Strain D). All strains are true breeding for a single homozygous recessive mutation that allows them to breathe fire. Cross #1 Hungarian Horntail (A) X Norwegian Ridgeback (B) = F1: All Sweet Breath Cross #2 Romanian Longhorn (C) X Swedish Shortsnout (D) = F1: All Sweet Breath Cross #3 Swedish Shortsnout (D) X Norwegian Ridgeback (B) F1: All Firebreathing Cross #4 Romanian Longhorn (C) X Hungarian Horntail (A) = F1: All Firebreathing How many genes are involved in creating a firebreathing phenotype? Group the dragons (A, B, C, and D) as to which contain mutations in the different genes.

1. It's a very well known fact that most dragons do not breathe fire, and it's also well known that alleles that enable fire breathing are recessive to the wild-type Sweet Breath phenotype. However, it's unclear how many different genes when mutated cause the fire breathing phenotype. To answer this guestion you use four different strains of dragon and perform a series of crosses. Your strains are the Hungarian Horntail (Strain A), the Norwegian Ridgeback (Strain B), the Romanian Longhorn (Strain C), and the Swedish Shortsnout (Strain D). All strains are true breeding for a single homozygous recessive mutation that allows them to breathe fire. Cross #1 Hungarian Horntail (A) X Norwegian Ridgeback (B) = F1: All Sweet Breath Cross #2 Romanian Longhorn (C) X Swedish Shortsnout (D) = F1: All Sweet Breath Cross #3 Swedish Shortsnout (D) X Norwegian Ridgeback (B) F1: All Firebreathing Cross #4 Romanian Longhorn (C) X Hungarian Horntail (A) = F1: All Firebreathing How many genes are involved in creating a firebreathing phenotype? Group the dragons (A, B, C, and D) as to which contain mutations in the different genes.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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7. In humans, the alleles for blood type are designated I^ (A-type blood), I ^ B (B-type blood) and i (O-type blood). What are the expected frequencies of phenotypes in the following matings? Draw a Punnett square showing the results for a). a) heter A x heter B: %A %B %0 %AB b) I ^ A * I ^ B * I ^ A_{i} : c) I ^ A * I ^ A * I ^ B * I ^ B : d) ABO :
1. A pure line Brown coat goat is crossed with pure line White coat goat. Consider the Brown coat is dominant over white coat. a. What is the result (F1) of this cross? b. What is the result when 2 F1 hybrid from (a) is crossed? Give the phenotype, genotype and their ratio. Make sure the phenotype and genotype were aligned with its ratio.
8. Answer the following questions for the two following pedigrees In Pedigree A, is the red highlighted trait dominant or recessive? Why? а. b. What is the genotype of individual C? In Pedigree B, is the red highlighted trait dominant or recessive? Why? а. d. What is the genotype of individual D? Pedigree A Pedigree B mele male : foncle I femole teffected D offected
1. Two loci found in mice are suspected to be linked. To test this hypothesis, a group of graduate students performed a test cross between mice that are true breeding for both dominant traits and mice that are true breeding for both recessive traits. Individuals from the F1 generation were crossed with individuals that express both recessive traits. The phenotypic results are shown in the table below. Use chi-square analysis to determine if the graduate students’ hypothesis is supported by the evidence. Phenotype Number of OffspringDominant 1, Recessive 2 132Dominant 1, Dominant 2 128Recessive 1, Recessive 2 118Recessive 1, Dominant 2 124 a. What are the degrees of freedom and the critical chi-square value (from the table)?b. What is the calculated chi-square value?c. Do the results support that the loci are linked or that they are independently assorted (unlinked)?
You are a studying the genetic basis of horn color in unicorns. Gene C determines the color of pigment destined for the horn by converting a pink precursor into a purple pigment. C- individuals make purple pigment whereas cc individuals accumulate pink precursor. Gene D ensures the deposition of the pigment into the horn cells, such that D- individuals have a colored horn (purple or pink), whereas dd individuals have a white horn. You breed two purple horned unicorns to each other (CcDd). Assuming Gene C and Gene D are unlinked, what is the probability that the baby unicorn has a purple horn? Please express your answer to 2 decimal places (e.g. 0.69).
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2. A trait in garden peas involves the curling of leaves. A dihybrid cross was made involving a plant with yellow pods and curling leaves to a wild-type plant with green pods and normal leaves. All F1 offspring had green pods and normal leaves. The F1 plants were then crossed to plants with yellow pods and curling leaves. The following results were obtained: 117 green pods, normal leaves 115 yellow pods, curling leaves 78 green pods, curling leaves 80 yellow pods, normal leaves A. Conduct a chi square analysis to determine if these two genes are linked. B. If they are linked, calculate the map distance between the two genes. How accurate do you think this distance is?
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5. The pedigree below traces the inheritance of Albinism, a genetic disorder. Affected individuals, indicated here by the coloured circles and squares, are unable to make a normal amount of melanin, the chemical that is responsible for eye, skin, and hair colour. Does Albinism appear to be caused by a dominant allele or by a recessive allele? Fill in the genotypes of the individuals whose genotypes can be deduced. What genotypes are possible for each of the other individuals? Explain! Naruto Hinata Reiner Asta Hange Mikasa Eren Historia Luffy Nezuko Zenitsu Tanjiro Son Goku
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