Mendel also studied tall and short varieties of pea plants. When he crossed tall x short plants together, the F1were tall. The tall F1 plants were self-hybridized to produce the F2. What proportion of phenotypes would be expected in the F2?

Mendel also studied tall and short varieties of pea plants. When he crossed tall x short plants together, the F1were tall. The tall F1 plants were self-hybridized to produce the F2. What proportion of phenotypes would be expected in the F2?

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Description: Mendel also studied tall and short varieties of pea plants. When he crossed tall x short plants together, the F1were tall. The tall F1 plants were self-hybridized to produce the F2. What proportion of phenotypes would be expected in the F2?1:2:1 tall

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter9: Patterns Of Inheritance

Section: Chapter Questions

Problem 1CT

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The text outlines some of the problems Frederick William I encountered in his attempt to breed tall Potsdam Guards. a. Why were the results he obtained so different from those obtained by Mendel with short and tall pea plants? b. Why were most of the children shorter than their tall parents?
Mendel used dihybrid crosses to test the idea that alleles for two different characters assort independently. In a typical dihybrid cross (such as RrTt x RrTt), what proportions of phenotypes would be expected in the offspring? Select one: a. 9:3:3:1 b. 4:4:4:4 c. 2:2 d. 3:1 e. 100% dominant phenotype
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.
Why did Mendel perform "reciprocal crosses"? Someone gives you a bag of yellow peas and you plant them in the Spring. Can you predict the color of the peas that will appear in the pods on the plants grown from these peas? Would your answer be different if you had received a bag of green peas? Explain what Mendel means when he writes that the 3:1 ratio observed in the first generation from the hybrids "resolves itself" into a ratio of 2:1:1
Mendel crossed homozygous plants with green seeds with homozygous plants with yellow seeds and found what all offspring were yellow construct a genetic diagram to show f1 and f2 generation
Mendel performed crosses in which he used pollen from a white-flowered plant to fertilize a purple-flowered plant and pollen from a purple-flowered plant to fertilize a white-flowered plant, showing the same results with both. What did these reciprocal crosses demonstrate? A. That the plants were not sterile. B. That there was no epistasis. C. That the trait could be passed from either parent. D. B and C.
When Mendel crossed in his P generation a yellow-seeded and green-seeded pea plants, all the offspring were yellow seeded. When he took these F1 yellow-seeded plants and crossed them with the original yellow-seeded plant from the P generation, what genotypic ratio was expected? Group of answer choices 1:2:1 3:1 1:1:1:1 1:1
Mendel performs a cross using a true-breeding pea plant with round, yellow seeds and a true-breeding pea plant with green, wrinkled seeds. What is the probability that offspring will have green, round seeds? Calculate the probability for the F1 and F2 generations.
Mendel grew pea plants to show that a single gene determines flower color. Plants with one or more dominant alleles (A_) produce purple flowers, and plants with two recessive alleles (aa) produce white flowers. In this example, flower color is the ____________________. gene locus exon trait dominant phenotype
When Mendel was conducting his research, he crossed two different varieties of pea plants, one that had jagged leaves with 8 points on each leaf and one that had perfectly smooth leaves. He found that the offspring all had 4 to 5 points on each leaf. Based on what you have learned in this course, how would you explain this result to Mendel?
Mendel wondered if the separation of alleles on one gene had any effect on the separation of alleles on another. To test this, Mendel looked at plants that were pure breeding for two traits at once—he crossed plants that were pure breeding for two traits with plants that were pure breeding for the opposite forms of the same traits. In conducting and analyzing those crosses, Mendel was able to discover predictable patterns and ratios in the phenotypes of the F1 and F2 offspring. Problem (Purpose) In this lab, you will explore mouse coat colour and eye colour as two separate genetic traits. Procedure Use the following information to answer the analysis questions. Black fur is dominant so the offspring must inherit one “F” allele to be black. White fur is recessive so the offspring must inherit two “f” alleles to be white. Black eyes are dominant so the offspring must inherit one “E” allele to be black eyed. Red eyes are recessive so the offspring must inherit two “e” alleles to…
When Mendel set up a Parental (P) cross between true breeding purple and white flowered plants to generate the F1 and then allowed the F1 to self-pollinate to generate the F2 he saw a dominant to recessive ratio of 3:1. What phenotypic ratio would be expected if he crossed the F1 with the original purple parent? a) 3:1 b) 9:3:3:1 c) 1:1 d) 4:0