Use the four possible combinations of alleles From each onion for color and taste to fill in the Punnett square below. This well illustrate a true di hybrid cross showing the Mendelian phenotypic ratio of 9:33:1
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- Activity 9GENES SEGREGATION BY BEAN-O TYPE Materials: Colored beans to represent the gene for a certain trait of garden pea. (60 pieces of the same size and shape; 30 pieces of which are of different colors from rest) Procedures: 1. Place the 30 pieces beans (one color) to one container and the other 30 pieces to the other container. Assign which color of beans will represent dominant and recessive genes of a specific trait of garden pea 2. Label the paper container as First Parent P1, male and other P1 female 3. At random, segregate the beans on the Lab table. Assume fertilization occurs and First filial generations (F1) are formed 4. Categorize the formed First filial generations 5. Put all the beans in one container. Assume that all the first filial generations undergo self-fertilization 6. Pick up the beans by two from the container without looking at it and collect the second Filial generation (F2) 7. Categorize the formed Second filial generations into two (2) phenotype, and…Question:- You are setting up a Mendelian tetra-hybrid (4 gene) cross. What are possible genotypes for the parents?How to build a genetic map? What is necessary? How does it relate to the physical distance? i. If I have 3 genes and want to learn their distance in cM, how many types of crosses do I need? Why?
- 24) When mendel performed mono-hybrid crosses with opposing traits (i.e. purple and white flowers), what did he find in the F1 generation? He found an intermediate phenotype that had not been seen before in all of the F1 generation He found that one of the traits was absent from the F1 generation He found that one of the traits was only present in 25% of the F1 generation He found that each trait was found in 50% of the F1 generation2. Be able to compare and contrast (discuss similarities and differences in) in your own words the terms genotype and phenotype, wild-type and mutant phenotypes. Step by step.Figure 13.3 In a test cross for two characteristics such as the one shown here, can the predicted frequency of recombinant offspring be 60 percent? Why or why not?
- 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…A. HUMAN PEDIGREE CASE ANALYSIS1. One couple has three children with the following sexes and ages: one son (40 y.o.) and two daughters (35 y.o. and 33 y.o.), all of them have normal pigmentation. Another couple has a son (35 y.o) and a daughter (20 y.o.) and all of them also have normal pigmentation. Both couples have normal pigmentation. The younger daughter from the first couple married the son of the second couple and they had three children. Their eldest daughter (5 y.o.) has normal pigmentation while their only son (3 y.o.) and one daughter (1 y.o.) have albinism. a. Draw the pedigree of this family. Follow protocols in making a pedigree. Provide the genotype of all individuals in the pedigree. Please provide also the gene notation. b. What is the mode of inheritance of this trait? c. Justify your answer in letter (b).d. For their normal daughter, what is the probability that she is a carrier? Show solution. e. If they will have a fourth child, what is the probability that the…Question:- A farmer decides to cross two tomato plants. One of the plants is a dihybrid for genes G and H. The other is homozygous recessive for gene G but homozygous dominant for gene H. Which of the following offspring genotypes would be recombinants? Select all that apply. Select one or more: a. GgHH b. All of the above are recombinant c. ggHH d. None of the above are recombinant e. ggHh f. GgHh
- MAKE CONNECTIONS The ABO blood type locus hasbeen mapped on chromosome 9. A father who has typeAB blood and a mother who has type O blood have achild with trisomy 9 and type A blood. Using this information, can you tell in which parent the nondisjunctionoccurred? Explain your answer. (See Figures 14.11and 15.13.)1. In this example, DNA samples from four individuals were amplified for a particular gene. Which individuals could have a parent-child relationship? (Select all that apply.) Jose: alleles 1 and 2 Matilda: alleles 3 and 4 Zeke: alleles 3 and 5 Lena: alleles 1 and 2 a) Jose and Lena b) Jose and matilda c) Jose and Zeke d) Matilda and Zeke e) Zeke and Lena f) Matilda and lena g) all individuals could be related to each other 2. If jose and Lena are siblings, which of the following statements could be true of their parents/ a) each parent has one copy of allele 1 and one copy of allele 2 b) one parent has two copies of allele 1 and the other has two copies of allele 2. c) one parent has two copies of one the alleles and the other parent has one copy of each allele d) If one parent has alleles 1 and 2 the other parent could have totally different allelesMonohybrid Cross Worksheet Directions: Answer each of the following questions using a Punnett Square and the rules of monohybrid crosses. The allele for dimples (D) is dominant to the allele for no dimples (d). A man heterozygous for dimples marries a woman who is also heterozygous for dimples. What is the man’s genotype and the woman’s genotype? What is the man’s phenotype and the woman’s phenotype? Do a cross to determine all potential dimple genotypes and phenotypes for the offspring of this man and woman. The allele for hitchhiker’s thumb (h) is recessive to straight thumb (H). If a man and his wife are both homozygous recessive, will any of their offspring potentially have hitchhikers thumb? What is the man’s genotype and the woman’s genotype? What is the man’s phenotype and the woman’s phenotype? What genotype(s) must the offspring have in order to have the phenotypic trait of hitchhiker’s thumb? Do a cross to determine all potential hitchhiker’s…