You are conducting independent research for your Honors Thesis in a Drosophila research lab. One of the graduate student researchers has provided you with two mutant strains of Drosophila. One has scarlet eyes, and the other has brown eyes. You cross homozygous scarlet-eyed male Drosophila with female flies homozygous for the brown-eye color allele, and all of the male and female F1 flies have wild-type eyes. Crosses involving F1 males x F1 females yield the results shown below. You know the traits involved are autosomal, and that reciprocal parental crosses produce similar results.A) Please define the alleles represented in this cross. B) List the genotypes of all classes of individuals in the P, F1, and F2Be sure to use the alleles you defined in Part AParental (P) GenerationGenotype of Homozygous scarlet-eyed males:Genotype of Homozygous brown-eyed females:F1 Generation:Genotype of Wild-type (red-eyed) males and females:F2 Generation:Genotype of wild-type males and females: Genotype of scarlet-eyed males and females: Genotype of brown-eyed males and females: Genotype of white-eyed males and females:An example is attached, along with the picture for this specific question. ### Genetic Cross Analysis**Cross #1:****Parental Generation (P):**- Homozygous scarlet-eyed males X - Homozygous brown-eyed females**First Filial Generation (F₁):**- Result: 1072 Wild-type (red-eyed) males and females**Second Filial Generation (F₂):**- Cross: F₁ males x F₁ females- Result: - 2684 wild-type (red-eyed) males and females - 891 scarlet-eyed males and females - 887 brown-eyed males and females - 298 white-eyed males and females#### Summary:In this genetic cross, the initial parental generation comprised homozygous scarlet-eyed males and homozygous brown-eyed females. Their mating produced the F₁ generation, which consisted entirely of 1072 wild-type (red-eyed) males and females.When F₁ males and females were crossed, the F₂ generation displayed a variety of eye colors in the offspring, suggesting a dihybrid cross involving incomplete dominance or another form of genetic variation impacting eye color. The F₂ generation yielded the following composition:- 2684 wild-type (red-eyed) males and females- 891 scarlet-eyed males and females- 887 brown-eyed males and females- 298 white-eyed males and femalesThis distribution of phenotypes indicates a more complex inheritance pattern likely influenced by multiple alleles or genes. Further analysis and ratio evaluation can be performed to deduce the specific genetic mechanisms involved. **Investigating Genetics of Flower Color in Foxglove Plants**The foxglove plant, *Digitalis purpurea*, is best known as the source of digitalis, a drug used to treat cardiac failure. The trumpet-shaped flowers of the wild type foxglove are typically white, with red spots in the throat area. While picking foxglove flowers in your grandmother's perennial flower garden, you discover a plant with solid-colored light red flowers, and you decide to investigate the genetics of flower color in these medicinal plants. You set up the following crosses (shown below):1. **Initial Cross:** - **White flowers with red spots (Purebred) x Solid colored light red flowers (Purebred)** - **Genotype:** - White flowers with red spots (DDWW) - Solid colored light red flowers (ddww)2. **First Generation (F₁):** - All plants have white flowers with red spots - **Genotype:** - DdWw3. **Second Generation (F₂):** - Offsprings from F₁ are crossed (F₁ x F₁) - **Phenotype Distribution:** - 1068 White flowers with red spots - 265 Solid dark red flowers - 89 Solid light red flowers - **Genotype(s):** - White flowers with red spots: D_W_ and ddW_ - Solid dark red flowers: Dd_ww - Solid light red flowers: ddww

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Description: You are conducting independent research for your Honors Thesis in a Drosophila research lab. One of the graduate student researchers has provided you with two mutant strains of Drosophila. One has scarlet eyes, and the other has brown eyes. You cr

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Answered: Cross #1: P: F1 Fs Homozygous…

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You are conducting independent research for your Honors Thesis in a Drosophila research lab. One of the graduate student researchers has provided you with two mutant strains of Drosophila. One has scarlet eyes, and the other has brown eyes. You cross homozygous scarlet-eyed male Drosophila with female flies homozygous for the brown-eye color allele, and all of the male and female F₁ flies have wild-type eyes. Crosses involving F₁ males x F₁ females yield the results shown below. You know the traits involved are autosomal, and that reciprocal parental crosses produce similar results.

A) Please define the alleles represented in this cross.

B) List the genotypes of all classes of individuals in the P, F₁, and F₂Be sure to use the alleles you defined in Part A

Parental (P) Generation

Genotype of Homozygous scarlet-eyed males:
Genotype of Homozygous brown-eyed females:

F₁ Generation:

Genotype of Wild-type (red-eyed) males and females:

F₂Generation:

Genotype of wild-type males and females:
Genotype of scarlet-eyed males and females:
Genotype of brown-eyed males and females:
Genotype of white-eyed males and females:

An example is attached, along with the picture for this specific question.

### Genetic Cross Analysis

**Cross #1:**

**Parental Generation (P):**
- Homozygous scarlet-eyed males
X
- Homozygous brown-eyed females

**First Filial Generation (F₁):**
- Result: 1072 Wild-type (red-eyed) males and females

**Second Filial Generation (F₂):**
- Cross: F₁ males x F₁ females
- Result:
- 2684 wild-type (red-eyed) males and females
- 891 scarlet-eyed males and females
- 887 brown-eyed males and females
- 298 white-eyed males and females

#### Summary:

In this genetic cross, the initial parental generation comprised homozygous scarlet-eyed males and homozygous brown-eyed females. Their mating produced the F₁ generation, which consisted entirely of 1072 wild-type (red-eyed) males and females.

When F₁ males and females were crossed, the F₂ generation displayed a variety of eye colors in the offspring, suggesting a dihybrid cross involving incomplete dominance or another form of genetic variation impacting eye color. The F₂ generation yielded the following composition:
- 2684 wild-type (red-eyed) males and females
- 891 scarlet-eyed males and females
- 887 brown-eyed males and females
- 298 white-eyed males and females

This distribution of phenotypes indicates a more complex inheritance pattern likely influenced by multiple alleles or genes. Further analysis and ratio evaluation can be performed to deduce the specific genetic mechanisms involved.

**Investigating Genetics of Flower Color in Foxglove Plants**

The foxglove plant, *Digitalis purpurea*, is best known as the source of digitalis, a drug used to treat cardiac failure. The trumpet-shaped flowers of the wild type foxglove are typically white, with red spots in the throat area. While picking foxglove flowers in your grandmother's perennial flower garden, you discover a plant with solid-colored light red flowers, and you decide to investigate the genetics of flower color in these medicinal plants. You set up the following crosses (shown below):

1. **Initial Cross:**
- **White flowers with red spots (Purebred) x Solid colored light red flowers (Purebred)**
- **Genotype:**
- White flowers with red spots (DDWW)
- Solid colored light red flowers (ddww)

2. **First Generation (F₁):**
- All plants have white flowers with red spots
- **Genotype:**
- DdWw

3. **Second Generation (F₂):**
- Offsprings from F₁ are crossed (F₁ x F₁)
- **Phenotype Distribution:**
- 1068 White flowers with red spots
- 265 Solid dark red flowers
- 89 Solid light red flowers
- **Genotype(s):**
- White flowers with red spots: D_W_ and ddW_
- Solid dark red flowers: Dd_ww
- Solid light red flowers: ddww

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Cross #1: P: F1 Fs Homozygous scarlet-eyed males Homozygous brown-eyed females X 1072 Wild-type (red-eyed) males and females F1 males x F1 females 2684 wild-type males and females 891 scarlet-eyed males and females 887 brown-eyed males and females 298 white-eyed males and females