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- Direction: Answer the following problems: 1. Predict the phenotypic ratios of offspring when a homozygous white cow is crossed with a roan bull. Illustrate using a Punnett square. 2. Complete the Punnett square for a cross between a black chicken (BB) and a white chicken (WW). Give the phenotype of the offspring in the F1 generation. Кey BB – black ww- white F1 BW – checkered Phenotype:Direction: Read and understand the ff. set of monohybrid cross problems and answer each problem by showing the Punnett square, genotypes ans phenotypes. 3. In tomatoes, red fruit (R) is dominant over yellow fruit (r). A plant that is homozygous for red fruit is crossed with a plant that has yellow fruit. What would be the genotypes and phenotypes? 4. If two of the first generation offspring from the problem above were mated, what would be the genotypes and phenotypes of the second generation?Direction: Read and understand the ff. set of monohybrid cross problems and answer each problem by showing the Punnett square, genotypes and phenotypes. 5. In humans, being a tongue roller (R) who is a non-roller marries a woman who is heterozygous for tongue rolling. dominant over non-roller (r). A man a. Father's phenotype: b. Father's genotype: c. Mother's phenotype: d. Mother's genotype:
- Direction: Read and understand the ff. set of monohybrid cross problems and answer each problem by showing the Punnett square, genotypes ang phenotypes. 1. In guinea pigs, short hair, S, is dominant to long hair, s. a. One guinea pig is Ss and one is ss. b. Both guinea pigs are heterozygous for short hair.NAME: Patterns of Inheritance Worksheet 1. True Breeding Parental Cross A homozygous dominant purple flowered plant is crossed with a homozygous recessive white flowered plant. a. What are the genotypes of the parent plants? (Use the Punnett square to determine the outcomes of this cross. Remember to place the gametes along the left side and top of the square. (P=Purple, p=white) b. What is the genotype of all F₁ plants? 1 b. c. What is the phenotype of all F₁ plants? C. d. How many plants out of 4 will produce white flowers? d. a. 2. Monohybrid Cross: The F₁ offspring from the above problem are allowed to self fertilize. a. What are the genotypes of the F₁ parents? a. (Use the Punnett square to determine the outcomes of this cross. Remember to place the gametes along the left side and top of the square.) b. What is the genotype ratio for this cross? c. What is the phenotype ratio for this cross? d. How many plants out of 4 will produces white flowers? d. b. C.Dihybrid Basics TT or Tt = tall tt = short GG or Gg = green gg = white 1.) A tall green pea plant (TTG9) is crossed with a tall green pea plant (TtGg) FOIL each parent’s genotypes: tall green pea plant (TTGg) short white pea plant (TtGg) How many of the 16 offspring are: tall & green tall & white short & green short & white
- Name Period into the genetics problem. Genetics Worksheet # 2 1. In pea plants, smooth peas (S) are dominant to wrinkled peas (s). Work the following crosses. a. homozygous dominant x recessive Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: b. heterozygous x heterozygous Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: 2, A man and his wife are both heterozygous for brown eyes (B). They have six children all of whom have blue eyes> How can this happen? List the genotypes of the parents and the children. Show the Punnett square. Parents: Kids: What is the chance that the next child will have blue eyes?Punnett Square Problems a. The presence of a widow's peak is dominant over a straight hairline. In a cross between a homozygous dominant male and a homozygous recessive female, what is the male's genotype? Use the letter T and/or t in showing the correct genotype. b. What are the resulting genotype(s) of the offsprings in the cross from the previous question? If you are including multiple answers, separate them with commas. c. What is the resulting phenotype(s) of the offspring? If you are writing multiple answers, please separate them with commas.Instructions: Answer the following problem using the punett square and identify its Genotypic ratio and Phenotypic ratio. 1. A homozygous round-seeded plant (RR) is crossed with a homozygous wrinkle-seeded plant (rr). What is the phenotypic and genotypic ratio of their offspring? Genotypic Ratio Phenotypic Ratio- 2. A heterozygous green-colored pod (Gg) is crossed with a yellow-colored pod (gg). Predict the Genotypic and Phenotypic ratio of their offspring. Genotypic Ration Phenotypic Ration
- Notes Bell Work Assignments Pedigree Chart Key How many females are carriers? |JO - Unaffected How many affected males are there? TO Carrier Complete a Punnett Square for the cross in the F4 generation. 10 Affected The affectedallele is recessive I Could the male in the F5 generation be affected? Could he be a carrier? If 'yes', what chance does he have of being affected? Of being a carrier? (answer is a fraction out of 4) Type here to search W BrTopic: Penetrance. Petal number is controlled by a single gene in merigonias. The gene has a completely dominant wild type allele F that makes a plant have five petals and a mutant recessive six petal allele(f). However the six petal trait is only 50% penetrant. You do the cross Ff x Ff. What fraction of the progeny do you have the 6 petals? what is the meaning for 50% penetrant.I. Perform the indicated single-gene and two-gene crosses. Show all work. Show all Punnett squares. List the gene or genes involved, list and define all allele symbols, and indicate the genotypes of the individuals you are crossing above the Punnett square. Answer questions that ask for a ratio as a ratio and questions that ask for a percent as a percent. In snapdragon plants, the alleles for flower color show incomplete dominance. First show a cross of two parents, one with red flowers and the other with white flowers. Then show a cross of two of the F1 plants to get the F2 generation. Indicate the genotype ratio and phenotype ratio for both the F1 and F2 generations.