In guinea pigs, a black coat (B) is dominant over a white coat (b), and straight hair (S) is dominant over curly hair (s). The genes for coat color and type of hair are located on different chromosomes. A heterozygous, black, and straight hair guinea pig (BbSs) was test crossed. What is the phenotypic ratio of the offspring produced from the test cross? Use 0 for phenotypes not produced in the above cross. Number: Answer Answer Answer Answer Phenotype: Black straight Black curly White straight White curly

In guinea pigs, a black coat (B) is dominant over a white coat (b), and straight hair (S) is dominant over curly hair (s). The genes for coat color and type of hair are located on different chromosomes. A heterozygous, black, and straight hair guinea pig (BbSs) was test crossed. What is the phenotypic ratio of the offspring produced from the test cross? Use 0 for phenotypes not produced in the above cross. Number: Answer Answer Answer Answer Phenotype: Black straight Black curly White straight White curly

Name: In guinea pigs, a black coat (B) is dominant over a white coat (b), an
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Description: In guinea pigs, a black coat (B) is dominant over a white coat (b), and straight hair (S) is dominant over curly hair (s). The genes for coat color and type of hair are located on different chromosomes. A heterozygous, black, and straight hair guine

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter11: The Basic Principles Of Heredity

Section: Chapter Questions

Problem 11TYU: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were...

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In guinea pigs, a black coat (B) is dominant over a white coat (b), and straight hair (S) is dominant over curly hair (s). The genes for coat color and type of hair are located on different chromosomes. A heterozygous, black, and straight hair guinea pig (BbSs) was test crossed. Which of the following rows identifies pure breeding guinea pigs for both hair colour and hair type? Select one: a. Genotype 1 Genotype 2 bbSS BBss b. Genotype 1 Genotype 2 bbSs BbSS c. Genotype 1 Genotype 2 BBSS BbSs d. Genotype 1 Genotype 2 BbSS BBSs
Two pure-breeding lines of petunia plants are crossed. Line 1 plants grow to a height of 54 cm, and Line 2 plants grow to a height of 18 cm. Petunia plant height is controlled by three genes, A, B and C. Line 1 has the genotype A₁A₁B₁B₁C₁C₁, and line 2 has the genotype A2A2B₂B₂C₂C₂. Assume that genotype alone determines plant height under ideal growth conditions and that the alleles of the three genes are additive. If the F1 plants are self crossed, what is the expected proportion of F2 plants with the genotype A₁A₁B₁B₁C₁C₁ 1/8 1/32 1/16 1/4 1/64
A homozygous variety of opium poppy (Papaver somniferum Laciniatum) with lacerate leaves was crossed with another homozygous variety with normal leaves. All the F₁ had lacerate leaves (jagged-edged leaves). Two F₁ plants were crossed to produce the F2. Of the F2, 249 had lacerate leaves and 16 had normal leaves. How are lacerate leaves determined in the opium poppy? two genes, with a dominant allele at both loci two genes, where one allele at a single locus is recessive lethal one gene, with codominant alleles at a single locus two genes, with a dominant allele at either or both loci Give genotypes for all the plants in the P, F₁, and F2 generations. Some generations will have more than one genotype. P F₁ F₂ (lacerate) F₂ (normal) aabb A_B_ Answer Bank aaB AaBb A_bb AABB
In corn, a colored aleurone is due to the presence of an R allele; r/r is colorless. Another gene controls the color of the plant, with g/g being yellow and G_being green. A plant of unknown genotype is test-crossed, and the following progeny plants were obtained. Colored green 89 Colored yellow 13 Colorless green 9 Colorless yellow 92 What was the phenotype and genotype of the plant used for the test cross? A. Colorless green - rG/rg B. Colorless yellow - rg/rg C. Colored yellow - Rg/rg D. Colored green - RG/rg
A variety of opium poppy (Papaver somniferum L.) with lacerate leaves was crossed with a variety that has normal leaves. All the F1 had lacerate leaves. Two F1 plants were interbred to produce the F2. Of the F2, 249 had lacerate leaves and 16 had normal leaves. Give genotypes for all the plants in the P, F1, and F2 generations. Explain how lacerate leaves are determined in the opium poppy.
Summer squash color is determined by the interaction of more than one gene. The presence of CC or Cc allele combinations produces a squash that is white in color, and the C allele is epistatic to the G allele. The presence of GG or Gg produces a squash that is yellow in color, and ccgg produces a squash that is green. After two fully heterozygous squash are crossed. Give the phenotypes, and frequency of occurrence, of the F2 offspring
Suppose that the wild type phenotype for tomatoes is red, round fruit with three-parted leaves and that a strain of mutant tomatoes has yellow, pear-shaped fruit with entire leaves. A and a represent the alleles for fruit color, B and b represent the alleles for fruit shape, and C and c the leaf shape. Two tomatoes with the genotypes Aa Bb cc and Aa Bb CC are crossed. The resulting Punnett square is shown. One cell has been completed with the correct tomato phenotype. Fill in the rest of the Punnett square by placing a fruit and leaf phenotype in each cell. ABC AbC aBC abC ABC Abc aBc abc Answer Bank
In corn plants, a dominant allele (K) allows kernel colour and a recessive allele (k) inhibits kernel colour when homozygous. On a different chromosome, the dominant gene P causes purple kernel colour and the homozygous recessive genotype causes red kernel colour.A true breeding white corn plant was crossed with a purple corn plant, yielding 50% red corn plants and 50% purple corn plants.What are the genotypes of the parental corn plants? Select one: a. KKPp kkpp b. KkPP kkPP c. kkPp KkPp d. KKPP kkPp
Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles, Y and y. The dominant Y allele results in green color, whereas the homozygous presence of the recessive y allele causes the plant to appear yellow. In a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained: colored, green 88 colored, yellow 12 colorless, green 8 colorless, yellow 92 Explain how these results were obtained by determining the exact genotype and phenotype of the unknown plant, including the precise arrangement of the alleles on the homologs.
In a cross between a black and a white cat, all members of the Fi generation are black. The F2 generation is made up of approximately 3/4 black and 1/4 white cat. (i) Diagram this cross, showing the genotypes and phenotypes of the parents, F, and F2 generations. What is the probability that the first two offspring will be homozygous and the third is white if an Ficat is test crossed?
Two corn plants heterozygous for purple and smooth kernels are crossed. What is the chi-squared value? Purple and smooth: 12 Purple and shrunken: 9 Yellow and smooth: 7 Yellow and shrunken: 6
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