**Educational Resource: Genetic Problems – Cases of Complete Dominance**### Exercise #4: "Genetic Problems"#### Cases of Complete Dominance1. **Gregor Mendel's Pea Plant Experiment:** - **Scenario:** Mendel crossed yellow-seeded pea plants with green-seeded pea plants and consistently obtained yellow seeds. - **Questions:** - a. Identify the dominant allele. - b. Determine the genotype of all green-seeded plants. - c. Illustrate Mendel's cross using a Punnett Square. - d. Compare the genotype of parent yellow-seeded plants and offspring. - e. Discuss a genetic fact about yellow-seeded pea plants. - f. Explain why green pea seeds are more common if yellow-seeded plants are dominant.2. **Human Eye Color Genetics:** - **Scenario:** A dark-eyed man and a light-eyed woman have ten dark-eyed children. - **Questions:** - a. Identify the dominant allele. - b. Determine the genotype of all light-eyed individuals. - c. Describe the genotypes of the parents. - d. Define the genotype difference between the dark-eyed parent and offspring. - e. Calculate the phenotype ratio of dark-eyed to light-eyed offspring from heterozygous dark-eyed parents using a Punnett Square.### Diagrams:- **Punnett Squares:** - **Description:** Two blank 2x2 Punnett Squares intended for illustrating genetic crosses, labeled for parental and offspring genetic outcomes. ### Special Note on Eye Color:- **Overview:** Eye color results from multiple alleles and possibly more than one gene pair. - **Phenotypes:** Determined by genes regulating the amount and distribution of melanin, a pigment. - **Genetic Basis:** Most people have some pigmentation; albinism is an exception. - **Melanin's Role:** Eye color largely depends on melanin's location in the iris. Brown eyes result from concentrated melanin, while yellow or yellow-brown eyes have dilute melanin particles.### Eye Illustration:- A drawing of an eye accompanies the note, emphasizing the relationship between melanin and eye color.This resource serves as a foundational exercise in understanding simple genetic dominance and how traits, such as seed color and eye color, are inherited.

Name: **Educational Resource: Genetic Problems – Cases of Complete Dominanc
Uploaded: 2024-03-20T06:43:04.000Z
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Description: **Educational Resource: Genetic Problems – Cases of Complete Dominance**### Exercise #4: "Genetic Problems"#### Cases of Complete Dominance1. **Gregor Mendel's Pea Plant Experiment:** - **Scenario:** Mendel crossed yellow-seeded pea plants with gr

According to our guideline we can answer only the first three subparts of the first question. So, upload the questions separately. The alleles are the alternative forms of a gene that are located on the same locus of a homologous chromosome. In case of diploid organism most genes have two alleles. According to the Mendelian law of dominance the heterozygous individuals always express the dominant allele.1. a) Suppose, the yellow seed is produced by Y allele and the green seed is produced by y allele. As the cross between yellow seed plants with the green seed plants produce all plants that yellow seed plants. That means the yellow seed is the dominant allele. b) The genotype of the green seed plants is yy. c) d) The parent yellow (YY) plant has different genotype than the yellow offsprings (Yy). The parent yellow plant is homozygous for yellow allele but the offsprings are heterozygous. e) The yellow seed pea plants in the offsprings are heterozygous and the parent is homozygous. f) The yellow seed is dominant but in the nature green sheet is found because in the nature mostly inbreathing occurs in between homozygous recessive plants. The green seed pea plants are mostly popular and for this reason the farmers choose inbreeding rather than cross fertilization.