short eared mutant male rabbit was crossed with normal long eared doe rabbits and 29 long eared and 29 short eared rabbits were produced. The short eared rabbits were crossed among themselves and 31 short eared and 11 long eared rabbits were born. Determine which phenotype is dominant and explain the ratios with regards to the genotypes of the parents in each cross

In garden pea plants, axial flower location is dominant (A) to terminal flower location (a). If a plant that is heterozygous for axial flower location is crossed with a plant that has terminal flower location, what is the genotypic ratio of the offspring?

Coat color in mice is influenced by two genes, one for color (A) and one for the amount of pigment production (C). Mice with the wild type agouti coat color have a yellowish to brownish color. Mice also have a gene that determines the amount of pigment the hair produces. Multiple crosses were made between male and female mice that were each heterozygous for both traits (AaCc). The data table shows the number of mice of each coat type. Calculate the average F1 generation coat color to answer the question. Which of the following is the most probable interaction between the two genetic loci, A and C, based on the average F1 ratio results? A - The two loci show an epistatic pattern with the loci C epistatic to loci A. B - The two loci show a codominant pattern with both loci affecting coat color. C - The two loci interact in a Mendelian pattern with A being completely dominant over C. D - The two loci show an incomplete dominance pattern with neither loci A nor C being dominant.

A variety of opium poppy with lacerate leaves was crossed with a variety that has normal leaves. All the F1 plants had lacerate leaves. Two F1 plants were then interbred to produce the F2. Of the F2 plants, 249 had lacerate leaves and 16 had normal leaves. What are the genotypes of the plants in the P (parental), F1, and F2 generations? How are lacerate leaves determined in the opium poppy? Note: You can use the symbols A and B to represent the two genes involved. (How do we know there are two?)

Given the cross AaBbCc x Aabbcc, what is the probability of obtaining an offspring with the genotype aabbCc?

In rabbits, an allelic series helps determine coat color. The alleles, in order of dominance, are listed below. C=full coat color Cch-chinchilla Ch-himalayan c=white What is the predicted outcome for a CCh rabbit crossed with a Cchc rabbit? Draw out the cross and show the predicted genotypes and phenotypes for the offspring.

What are the expected phenotypic ratios in the offspring of the following crosses (written as red : orange : green)? Use the most simplified ratio (e.g. 1 : 4 instead of 2 : 8). Fill in 0 if none of the offspring from a cross will be a particular color. RRgg x rrGg -  red :  orange :  green RrGg x RrGg -  red :  orange :  green RrGg x rrGg -  red :  orange :  green

In a particular lizard species, green skin (G) is dominant to blue skin (g). You decide to cross a lizard (Parent #1) that is homozygous recessive for skin color with a lizard (Parent #2) that is homozygous dominant for skin color. Set up a Punnett Square for this cross and then answer the following questions. What is the genotype of Parent #1? [Choose ] What is the phenotype of Parent #1? [Choose ] What is the gentype of Parent #2? [Choose ] What is the phenotype of Parent #2? [ Choose ] What percentage of the offspring will have [Choose ] blue skin? What percentage of the offspring will have [ Choose ] green skin? > > > > >

In snapdragons, red flower color (R) is incompletely dominant over white flower color (r), so that the heterozygote has pink flowers. A red snapdragon is crossed with a white snapdragon, and the F1 are intercrossed to produce F2. What is the genotype and phenotypes of the F1 and F2, along with their expected proportions? If the F1 are backcrossed to the white parent, what will be the expected genotype and phenotype of the offspring? If the F1 are backcrossed to the red parent and the resulting progeny are intercrossed, what is the expected proportions of genotypes and phenotypes in the progeny?

You are doing a cross with Drosophila using the following two traits. Curly wings is dominant over straight wings, and round eyes is dominant over elliptical eyes. You cross a female fly that is known to be heterozygous for both genes with a male that is heterozygous for the wing gene but has elliptical eyes. This cross produces 74 flies with curly wings and round eyes, 61 with curly wings and elliptical eyes, 24 with straight wings and round eyes, and 21 with straight wing and elliptical eyes. Calculate the expected phenotype ratios for this cross, then use the chi-square test to see if the observed data are consistent with the expected numbers.