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- 1. Complete the Punnett square for a cross between a homozygous red-flowered snapdragon (RR) and a homozygous white-flowered snapdragon (WW). Give the ratio for the phenotype and the genotype. Key F1 Genotypic Ratio: RR – red Phenotypic Ratio: wW- white RW- pink 2. Complete the Punnett Square for a cross between two Fi plants (WW). Give the phenotypic ratio for the F2 generation. F2 Phenotypic ratio: 3. Cite some possible applications of genetics to plant breeding.5. Cross a Hooked Nose-tail bearing Hobbit with a heterozygous straight nosed none-tail bearing hobbit. What is the percentage of the genotype and phenotype of the offspring? What type of punnett square will you be using for this cross? Parents: Genotypes: P1 x P2 Offspring: Genotype: Phenotype:2. Cross a Brown and White Spotted Cow with a White Cow. What is the percentage of the genotype and phenotype of the offspring? What type of punnett square will you be using for this cross? Codomnent BB WW Parents: Genotypes: P1 x P2 Offspring: Genotype: Phenotype:
- 3. Cross a Red Rose and Pink Rose. The other phenotype for this type of Rose is white. What is the percentage of the genotype and phenotype of the offspring? What type of punnett square will you be using for this cross? Parents: Genotypes: P1 x P2 Offspring: Genotype: Phenotype:1. The gene for tall is dominant over dwarf in the garden pea plant used by Mendel. A pea plant that comes from a line of plants that are all tall is crossed with a dwarf pea plant. What is the phenotype of the Fi generation? What is (are) its genotype(s)? Character/s: Alleles: a Genotype: 9 Genotype: Cross: Genotype/s: Phenotype/s: Genotypic Ratio: Activate V Go to Setting Phenotypic Ratio:2. Complete the following cross: a. In pea plants, the dominant allele T gives a tall phenotype while the recessive allele t has a dwarf phenotype. Draw the Punnett square by clicking on and placing the correct capital or lowercase letter combination in the boxes. In this example, eggs and sperm can be placed on either top or side Tt x Tt What is the genotype ratio? What is the phenotype ratio?
- 3. If an individual with genotype Yy Ww Pp ee Bb is crossed with an individual with the same genotype, what proportion of offspring will have the dominant phenotype for the four heterozygous loci? answers: 81/256 81/128 27/256 3/167. In pea plants, inflated pod is governed by a completely dominant gene and a constricted pod by a recessive gene. Another independently segregating dominant gene produces green pod while recessive gene produces yellow pod. Give the genotypes of the parents in each of the crosses given below. Phenotypes of Offspring Parental Phenotypes Parental genotypes Inflated Inflated Constricted Constricted yellow green yellow Green inflated green x inflated yellow 7.1. 58 62 18 22 7.2. constricted green x 56 18 constricted green 7.3 inflated yellow x 64 20 inflated yellow inflated green x inflated yellow 7.4. 36 38 inflated green x inflated green 7.5. 178 62 58 221. Use the following information to answer the question: Parental cross is RrYy x RrYy Seed Shapes are R-round, r-wrinkled Seed colors are Y-yellow, y-green Based on the information given, what is the phenotype ratio of the offspring of this cross? 2. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds? 3. What is the chromosome theory of inheritance? How does this theory explain Mendel's results? 4. A cross between two organisms heterozygous for two different genes (AaBb) results in a 9:3:3:1 phenotype ratio among the offspring. Is the offspring's genotype ratio the same? Explain your answer.…
- 3. Mendel crossed that was homozygous dominant for flower color and heterozygous for height with a plant that was heterozygous for flower color and homozygous recessive for height. Do a punnet square and calculate possible genotypes and phenotypes of this cross. Dominant for flower color = P (purple) Recessive for flower color = p (white) Dominant for height = T (tall) Recessive for height =t (short) %3D P1: PP X Tt Pp X tt PT Pt PT Pt Pt PPTT PPtt PPTT PPtt Pt PPTT PPtt PPTt PPtt pt PpTt Pptt PpTt Pptt pt PpIt Pptt PpTt Genotypes: Phenotypes: Genotypic Ratio: Phenotypic:9. Make a pedigree for each of the following situations. For each individual, write the individual's genotype (when possible) next to the individual's symbol (e.g. O xty, I Gg): a. Two parents do not have cystic fibrosis and they have a daughter with cystic fibrosis and a son who does not have cystic fibrosis. The daughter grows up and she mates with a male who does not have cystic fibrosis. Their only child is a boy and he has cystic fibrosis. b. A man with hemophilia mates with a female without hemophilia. They have one son and one daughter. The daughter has hemophilia and the son does not have hemophilia. The son grows up, and he marries and mates with a female. Their only child is a boy, and he has hemophilia.1. In pea plants, yellow color (Y) is dominant over green color (y). A yellow-colored pea plant is crossed with a green-colored pea plant. Half of their offspring is yellow-colored while the other half is green-colored.What is the genotype of the yellow-colored parent? YY O Yy yy The genotype cannot be determined. 2. A scientist discovered an unknown organism in a tropical rainforest. The organism has been identified to possess the following characteristics: (1) multicellular at some point of its life cycle; (2) feeds on decaying organic matter; and (3) has a cell wall made of chitin.Which Kingdom does the unknown organism likely belong to? Kingdom Animalia Kingdom Plantae Kingdom Fungi Kingdom Protista 3. Which statement about ferns is TRUE? Ferns are unicellular organisms. Ferns are nonvascular plants. O Ferns have spores as reproductive structures. Ferns are capable of secondary growth.