While working in his garden at the abbey where he lived, Mendel used pea plants to demonstrate how traits are inherited. He used his experiments led to the development of his Laws of Inheritance. P(YY)=1/4 P(Yy)=1/4 P(Yy)=1/4 P(yy)=1/4 What part of the Punnett square BEST represents the Law of Segregation? O offspring phenotypic ratio of 1:2:1 O duplication of the P1 genotype presence of a recessive phenotype. O separation of the parent's genotype alleles.

While working in his garden at the abbey where he lived, Mendel used pea plants to demonstrate how traits are inherited. He used his experiments led to the development of his Laws of Inheritance. P(YY)=1/4 P(Yy)=1/4 P(Yy)=1/4 P(yy)=1/4 What part of the Punnett square BEST represents the Law of Segregation? O offspring phenotypic ratio of 1:2:1 O duplication of the P1 genotype presence of a recessive phenotype. O separation of the parent's genotype alleles.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 2QP: The text outlines some of the problems Frederick William I encountered in his attempt to breed tall...

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Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?
Francis Galton, a geneticist of the pre-Mendelian era, devised the principle that half of our genetic makeup is derived from each parent, one-quarter from each grandparent, one-eighth from each great-grandparent, and soforth. Was he right? Explai
In which type of cross(es) can we apply and demonstrate the law of segregation and law of independent assortment? Why can’t we apply the 2 Mendelian laws on monohybrid crosses? Explain briefly. How can one use a pedigree chart to hypothesize how a certain condition is transmitted? Can a pedigree chart show probability of occurrence more accurately than the Punnett square? Why or why not?
Which of the following is evidence that Mendel had that helped him to construct his Law of Segregation?A) His F2 generation in the dihybrid cross resulted in a 1:1:1:1 distribution of phenotypes.B) He found no linkage of different genes in the offspring of his pea plants.C) The F1 generation of the monohybrid cross resulted in blended phenotypes.D) The F2 generation of the monohybrid cross resulted in the recessive trait reappearing as a phhenotype.E) Two of the above are correct.
In Figure 1-6, the students have 1 of 15 different heights,plus there are two height classes (4′11″ and 5′ 0″) forwhich there are no observed students. That is a total of17 height classes. If a single Mendelian gene can account for only two classes of a trait (such as purple orwhite flowers), how many Mendelian genes would beminimally required to explain the observation of 17height classes?
When Gregor Mendel performed his breeding experiments on pea plants, he discovered that tallness in the plants is inherited through a simple dominant trait (coded "T") with shortness as the recessive trait (coded "t"). Imagine that Mendel bred a homozygous dominant pea plant with a pea plant heterozygous for tallness. Draw a Punnett Square to help you answer this question and the next one: In the 1st generation of offspring, we expect the genotypes (for tallness) to include… a) 50% homozygous dominant, 50% heterozygous b) 100% heterozygous c) 50% tall, 50% short d) 100% tall e) None of the above
A genetic engineer is going to cross two watermelon plants to produce seeds for a spring planting. He is breeding for size, and wants to have as many watermelons with the phenotype for long shape as possible. In watermelons, the allele for short shape (R) is dominant to the allele for long shape (r). Would crossing a watermelon homozygous recessive for the trait with a watermelon heterozygous for the trait give the most long watermelons possible? Explain your answer using Punnett Squares.
When Gregor Mendel performed his breeding experiments on pea plants, he discovered that tallness in the plants is inherited through a simple dominant trait (coded "T") with shortness as the recessive trait (coded "t"). Imagine that Mendel bred a homozygous dominant pea plant with a pea plant heterozygous for tallness. Draw a Punnett Square to help you answer this question and the next one: In the 1st generation of offspring, we expect the phenotypes (for tallness) to include… a) 50% homozygous dominant, 50% heterozygous b) 100% heterozygous c) 50% tall, 50% short d) 100% tall e) None of the above
Do the data that Mendel obtained fit his hypotheses?For example, Mendel obtained 315 yellow round, 101yellow wrinkled, 108 green round, and 32 greenwrinkled seeds from the selfing of Yy Rr individuals(a total of 556). His hypotheses of segregation andindependent assortment predict a 9:3:3:1 ratio in thiscase. Use the chi-square test to determine whetherMendel’s data are significantly different from whathe predicted. (The chi-square test did not exist inMendel’s day, so he was not able to test his own datafor goodness of fit to his hypotheses.)
Over the years, Mendel experimented with more than 30,000 pea plants. Why did Mendel collect data on so many plants? Why didn’t he study just one cross? Hint: Read “What Are the Odds?” on page 124 before answering.
What could be the genotypic and phenotypic ratios for a typical mendelian trait showed in the picture?
As you know Mendel’s main contribution to genetics was his proposing a model of particulate inheritance. This discovery contradicted the widely held belief that blending inheritance was the true theory that explained hereditary traits. One advantage that Mendel had in choosing garden peas (Pisum sativum) was that he could either allow the pea flowers on a plant to self-pollinate or he could deliberately cross-pollinate the flowers. For his single locus crosses of pure-breeding lines, he would take the F2 offspring of the dominant phenotype (such as yellow seeds) and ensure that each yellow-seeded plant would self-pollinate. He was able to show that 1/3 of all the yellow-seeded plants in this generation bred true while the other 2/3 of the yellow seeded plants showed segregation. Do you believe that this extra experiment gave additional important evidence for the particulate theory of inheritance or did the offspring from the F1 x F1 cross provide enough evidence of Mendel’s First Law?…