12 Genetics practice problem 5: Apply In humans, the neurological condition Huntington's disease is due to a dominant allele (H). What are the expected genotype proportions and phenotype proportions if a heterozygote is mated with a typical partner? Genetics practice problem 7: Apply • A dwarf corn plant is mated with a tall corn plant. All of the offspring are tall. What are the genotypes of the parents? Show the Punnett square to prove your answer. Genetics practice problem 6: Apply In humans, cystic fibrosis is a recessive condition. If a woman with cystic fibrosis has a child with a man who is homozygous typical (does not have CF), what is the probability that their child will have CF? 13 Dihybrid practice problems Following two traits from parents to offspring Step 1: Write allele and genotype keys Step 2: Determine genotypes of the parents Step 3: Determine GAMETES produced by each parent Step 4: Show fertilization (Punnett square)

12 Genetics practice problem 5: Apply In humans, the neurological condition Huntington's disease is due to a dominant allele (H). What are the expected genotype proportions and phenotype proportions if a heterozygote is mated with a typical partner? Genetics practice problem 7: Apply • A dwarf corn plant is mated with a tall corn plant. All of the offspring are tall. What are the genotypes of the parents? Show the Punnett square to prove your answer. Genetics practice problem 6: Apply In humans, cystic fibrosis is a recessive condition. If a woman with cystic fibrosis has a child with a man who is homozygous typical (does not have CF), what is the probability that their child will have CF? 13 Dihybrid practice problems Following two traits from parents to offspring Step 1: Write allele and genotype keys Step 2: Determine genotypes of the parents Step 3: Determine GAMETES produced by each parent Step 4: Show fertilization (Punnett square)

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 2CS: Genetics in Practice case studies are critical-thinking exercises that allow you to apply your new...

See similar textbooks

Similar questions

Problem 3: In snapdragons, the inheritance of flower color and size of leaves are examples of Incomplete Dominance. When red flowered plants are crossed with white, the offspring have pink flowers. Similarly, when a plant with broad leaves is crossed with plants having narrow leaves, the offspring have intermediate leaves. Regarding a cross between a homozygous red-flowered, broad- leaved plant with a homozygous white-flowered, narrow-leaved plant. What are the phenotypes and their ratio in the F1 generation? Construct a Punnett square. What are the phenotypes and their ratio in the F2 generation? Construct a Punnett square.
I. OBJECTIVES At the end of the activity, the students are able to: A observe the separation and independent assortment of alleles: B. demonstrate the inheritance of dominant and recessive traits, codominance. and incomplete dominance: and C. construct a model of a dragon based on the characteristics inherited from the parent dragons. II. MATERIALS Writing materials 2 Five-peso coins 2 One-peso coins 2 Twenty-peso coins Ill. PROCEDURE I. In this activity. you and a partner will work together to produce o baby dragon from the random mixing of genetic traits. Each student will be a surrogate dragon parent. Surrogate dragon parent partners must be of the opposite sex. therefore the female has X/X chromosomes white the male has X/Y chromosomes. You can ask your parent. sibling. or relative to work with you Or you Can work with your Classmate. 2. Each partner must have three different coins -- one of each color of autosome (green and yellow autosomes). and one sex chromosome coin_ You can…
Subject: Genetic problems 6. how would you recognize a line of garden peas that had become genotypically pure for a given trait? 7. A cross of two pink-flowered plants produces offspring whose flowers are red, pink, or white. Defining your genetic symbols, give all the different kinds of genotypes involved, and the phenotypes they represent. 9. In snapdragons, red flowers (R) are incompletely dominant to white (r), the hybrid being pink; narrow leaves (N) are incompletely dominant to broad leaves (n), the hybrid being intermediate in width ("medium"). show the genotypes and phenotypes for the progeny of a cross between a. red medium and pink medium plant b. a pink medium and white narrow c. two identical dihybrids 12. In guinea pigs, short is dominant to long. A short-haired guinea pig was mated to a long-haired one. What proportions of the offspring (F1) will be expected to be: a. homozygous short-haired b. homozygous long -haired c. heterozygous short-haired d. heterozygous…
Problem 5. The eye color of fruit flies is an X-linked trait. The red eye color is dominant and the white eye color is recessive. If a white-eyed male fly mates with a heterozygous red-eyed female fly, what will be the genotypes and phenotypes of their offspring? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Offspring- c) Phenotypes of Offspring-
TRAIT: BENT FINGER 1. What are the roles of the DNA, genes and proteins in a given trait?2. How would you relate the individual trait or characteristics to proteins,genes and DNA?3. Would the manifestation of a trait be affected once the DNA nor the genesare altered?
PROBLEM 1. In a certain plant, yellow fruit, Y, is dominant to white fruit, y. A heterozygous plant with yellow fruit is crossed with a plant with white fruit. Determine the probable genotypic and phenotypic ratios resulting from this cross. Determine the probable genotypic and phenotypic ratios expected from crossing two heterozygous plants of Problem 1. Show your complete solutions (Punnet square)
Problem: A homozygous tall, homozygous white flower plant crosses with a homozygous short, homozygous purple flower plant. We know that the purple and tall flowers are the dominant traits. Show your work. 1. What are the genotypes of the offspring? Why? 2. What are the genotypes of the offspring? Why?
Unpacking Problem 731. Define homozygous, mutation, allele, closely linked, recessive, wild type, crossing over, nondisjunction, testcross, phenotype, and genotype.2. Does this problem concern sex linkage? Explain.3. How many chromosomes does Drosophila have?4. Draw a clear pedigree summarizing the results of crosses1, 2, and 3.5. Draw the gametes produced by both parents in cross 1.6. Draw the chromosome 4 constitution of the progeny ofcross 1.7. Is it surprising that the progeny of cross 1 are wild-typephenotype? What does this outcome tell you?8. Draw the chromosome 4 constitution of the male testerused in cross 2 and the gametes that he can produce.9. With respect to chromosome 4, what gametes can thefemale parent in cross 2 produce in the absence of nondisjunction? Which would be common and which rare?10. Draw first- and second-division meiotic nondisjunctionin the female parent of cross 2, as well as in the resultinggametes.11. Are any of the gametes from part 10 aneuploid?12.…
Problem 1. Tallness is a dominant trait and shortness is a recessive trait in a pea plant species. If you cross two heterozygous plants, what will be the genotypes and phenotypes of the offspring? What will be the genotypic and phenotypic ratios? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Offspring- c) Phenotypes of Offspring- d) Genotypic Ratio of Offspring- e) Phenotypic Ratio of Offspring-
Answer the following questions on Genetic Counseling: 1. What “soft” skills does a genetic counselor need that might not be quantified by achieving a degree in a STEM field. Soft skills are interpersonal skills like active listening, time-management, and problem solving. 2. Why are pedigrees a tool used in genetic counseling and what might they tell the person or people being counseled? 3. Identify two to three tricky ethical situations a genetic counselor may run into when working with a couple who are expecting a baby.
16 quantitative traits, such as height and weight, that do not fall into discrete categories, are viewed as—————.
6. In solving problems 1-4, you made some predictions of TRCs based on the genotypesof the individuals involved. Suppose we could measure the TRCs for some people withthose genotypes and found the actual values to be different from those predicted by yourcalculations. How would you explain these discrepancies?