Chapter 6 - Worksheet Activity

Task 3 A. Construct a pedigree chart that displays the following information: - Grandparents that do not have colour blindness - A second generation consisting of 2 daughters (Ada and Brie) and son (Charles). - Charles has 2 daughters, his eldest daughter has colour blindness. - Colour blindness is an X-linked condition. B. Using the information above, state the probability that Ada and Brie have colour blindness. C. Using a diagram, calculate the probability that the Charles' youngest daughte € colour blindness.

Problem 2: In horses, black coats and trotting gait are dominant while the recessive alleles are white and pacing gait.   If the male is homozygous for both dominant traits, what is the genotype of the male?   Regarding a cross between the homozygous male with the homozygous recessive female. What are the phenotypes and their ratio in the F1 and F2 generations?

Background Problem N° 6 Objective: To illustrate the differences between the dominant/recessive model vs. partial (or incomplete) dominance model. In incomplete dominance, the phenotype is neither dominant nor recessive, but intermediate instead. a. Explain why a monohybrid cross of snapdragon plants carrying white flowers with red-flowered plants produces all pink flowers in the F1 generation. [Hint: What makes flowers red, purple, yellow, etc.?] b. What are the genotypic and phenotypic ratios of snapdragon flowers in the F2 generation? True breeding individual = Homozygous for either trait.

PROBLEM 3: Using the Punnett square, determine the different combination of gametes with the genotypes G9MM (paternal) and ggmm (maternal). G is dominant for having a widows peak and g is recessive for not having a widow's peak. M is dominant for having the ability to roll the tongque and m is recessive for not having the ability to roll the tongue. Determine the following: a. What are the offsprings phenotype: b. What are the offsprings genotype: c. Probability of widow's peak and can tongue roll d. Probability of offspring with no widow's peak but can roll its tonque e. PUNNETT SQUARE

PROBLEM 2: A homozygous red flowered plant (RR) is crossed with a homozygous white plant (rr). Justify your answer by using Punnett Square. a. What are the genotypes and phenotypes of the offspring? b. What are the phenotypes and genotypes of the offspring? c. What is the probability of having a white flower? d. What is the probability of having a red flower? e. PUNNETT SQUARE

Classical Genetics Group Practice Problems Practice Problems 1. In guinea pigs, black fur is dominant to white fur. Assign a symbol for each allele: black = white = Use a Punnett square to determine the genotypic and phenotypic ratios for each of the following crosses. Show all work. a) P: heterozygous black X white b) P: heterozygous black X heterozygous black

PROBLEM SOLVING: 1. What is the probability of a woman who will have 5 children giving to four girls and 1 boy in that order? (Apply product or Sum Law of Probability). 5 points 2. If two parents, both heterozygous carriers of the autosomal recessive gene causing cystic fibrosis, have five children, what is the probability that exactly three will be normal? (Use binomial formula) 5 points

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-

Background Problem N° 1 Objective: To explore chromosome number in living organisms and apply the definitions of ploidy: Diploid = 2n Haploid = n (as in 2n → [4n] → n +n+n+n) Monoploid = n Draparnaldia plumosa Draparnaldia acuta Nuclei in somatic cells of the freshwater alga Draparnaldia plumosa have 13 chromosomes. In the closely related species Draparnaldia acuta, nuclei in somatic cells have 26 chromosomes. The following is correct: Polyploid = 3n, 4n, 5, 6n, . a. Gametes of Draparnaldia acuta should contain 13 chromosomes. b. Draparnaldia plumosa zygotes contain 26 chromosomes; meiosis should occur after fertilization. c. Draparnaldia acuta is a diploid organism; the expected n number for its haploid gametes is 13. d. Draparnaldia plumosa is a monoploid organism with n = 13. All of the above е. Background Problem N° 2 Objective: To explore the concept of species in Somatic cells of the horse (Equus caballus) have 32 pairs of chromosomes, whereas the cells of the donkey (Equus…

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Problem 7: Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. I 11 IV 4 a. List genotypes of as many of the family members as possible. b. If individuals A and B marry, what is the probability that their first child will have PKU? If their first child is normal, what is the probability that their second child will have PKU? If their first child has the disease, what is the probability that their second child will be unaffected?

Problem 3: Consider the accompanying pedigree of a rare 11 ||| IV A B omal recessive disease, PKU. a. List genotypes of as many of the family members as possible. b. If individuals A and B marry, what is the probability that their first child will have PKU? c. If their first child is normal, what is the probability that their second child will have PKU? d. If their first child has the disease, what is the probability that their second child will be unaffected?

Study Questions and Problems: Show your solutions. 1. A man and a woman got married and decided to have 5 children. a. What is the probability that the couple will have 3 girls and 2 boys? b. What is the probability that all children will be boys? c. What is the probability that all will be girls? d. How many probable combinations will there be if the couple wants to have 4 girls and 1 boy? e. If the couple decides to have another child, what is the probability that this child will be a boy?

Performance Task 2 Problem Set: Sex Linkages A. Answer the following problems. 1. Complete a Punnett Square for the cross between a human female (XX) and a human male (XY). What is the chance that the parents will have a girl? ANSWER: 2. If the same parents have four boys, what is the probability their fifth child will be a girl. 3. Hemophilia is a recessive sex-linked disease carried on the X chromosome in humans. Cross a woman carrier for Hemophilia to a hemophiliac man. Show your solution using Punnett Square. La.) What % of the offspring will be carrier females? b.) What % will be normal males? c.) What % will be normal females (those who do not have the disease)? _d.) What % will be hemophiliac females? Le.) What is the genotype of the carrier female? 4. Marites who has hemophilia marries Lando who's a normal person. How many of their children will have hemophilia, and what is their sex? How many children will have the disease? What is the sex of the child with the disease?

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…

Please show all work and steps

Monohybrid Practice Problems For each of the following, show the Punnett Square and give the Genotype AND Phenotype for each on your own paper! 1. In human, brown eyes are dominant over blue eyes. What type of offspring would you expect if you crossed a heterozygous brown eyed person to a heterozygous brown eyed person? 2. A widow's peak hairline is dominant to straight hairline. Cross a heterozygous widow's peak hairline person to a straight hairline person. 3. In humans premature gray hair is dominant over normal hair coloring. Cross a homozygous premature gray haired person to a homozygous normal haired person. 4. In humans tongue rolling is dominant to non-tongue rolling. What would be the expected type of offspring if a homozygous tongue roller was crossed to a heterozygous tongue roller? 5. Brown hair is dominant over light colored hair. Cross two light haired people. 6. In a certain plant yellow fruit is dominant to white fruit. A heterozygous plant with yellow fruit is crossed…

Problem 3. What would be the expected phenotypes and genotypes of the offspring between a cross of a pure bald father and a pure non-bald mother?

Genetic Problems Read the following genetic problems, and then complete the activities and questions for each problem 1. In the pea plant, the green pod color allele is dominant to the yellow pod color allele. o Set-up a monohybrid cross between a pea plant that is heterozygous and a true-breeding yellow pod pea plant. o What percentage of the offspring produced from this cross would you expect to have yellow pods? 2. Within a mouse population, the black fur allele (B) is dominant to the white fur allele (b) and the short whisker allele (S) is dominant to the ngs long-whisker allele (s). o A heterozygous black-furred short-whiskered mouse is crossed with a homozygous white-furred long-whiskered mouse. o What percentage of the offspring will be black-furred with long whiskers? 3. A physician is examining the blood types of children from a family. o Child 1 has blood type AB, Child 2 has blood type B, Child 3 has blood type B, and Child 4 has blood type A. o Based on the phenotypes of…

Questions and Problems: Show your solutions. 3. If two gene pairs A and a and B and bare assorting independently with A dominant to a and B dominant to b, what is the probability of obtaining: а. an AB gamete from an AaBb individual? b. an AABB zygote from an AaBb x AaBb cross? С. an aaBb offspring from an AaBB x aabb cross? d. a phenotype aB from an Aabb x aaBb cross? е. an ab gamete from an aaBB individual?

Problem 9: Albinism is inherited as an autosomal recessive. In the figure below, assuming that persons from the general population are not heterozygous for albinism (Aa), what are the genotypes of all persons whose genotypes are known? (i.e., indicate the genotypes on the figure for all known AA, Aa, and aa individuals) 어ㅁ ㅁㅇㅇㅁ 라이 ㅇㅇㅇㅇㅇㅇㅇㅇㅇㅇㅇㅁ ㅇㅇㅁㅁ 58 o

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?

Problem #1 In rabbits, short hair (S) is dominant over lang hair (s). What genotype and phenotype ratios are expected from a cross between two heterozygous shorthaired rabbits? P X Genotypic Ratio: Phenotypic Ratio:

Part I Analysis Questions: 1. When a corn plant with all purple kernels is crossed with a corn plant with all yellow kernels, the offspring have all purple kernels. a. Using your understanding of inheritance, explain this observation / outcome. b. What is the genotype of each of the parents (link to the phenotype) and the purple offspring? c. If the purple offspring was to reproduce, what gametes would it form? 2. What would be the genotype(s) and phenotype(s) of the offspring when a heterozygous corn plant is bred with a homozygous plant with purple kernels? Show your work in a Punnett square and explain why you would get the proposed offspring (demonstrate your understanding of inheritance in terms of genotype and phenotype). 3. What would be the genotype(s) and phenotype(s) of the offspring when a heterozygous corn plant is bred with another heterozygous corn plant? Show your "reasoning" with a Punnett square. 4. Looking back at your data, what do you predict was a. the genotype of…

Problem 2: In summer squash, white fruit is dominant to yellow, and flat fruit is dominant to round. The selected parents are a plant with white-flat fruit (homozygous) and a plant with yellow-round fruit. Carry this cross through the F₂ generation. List phenotypic ratio for the F, generation. Problem 3: Persian cats have the dominant gene for black coat and the recessive gene for long hair. Siamese cats have the recessive gene for tan coat and the dominant gene for short hair. A pure-breeding black, long hair Persian cat is mated with a pure-breeding tan, short hair Siamese. Calculate the F, and F₂ generations. List the phenotypic ratio for the F₂ generation. Show your calculations in the space below.

PLease help, double and triple check your answers, im using this to study, these questions are NOT graded they are PRACTICE problems

Solve only for a4 a5 and b1