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You are repeating one of Mendel's classic experiments. You expect to find round peas: wrinkled peas in a 3:1 ratio. Calculate p values.
You count 400 peas. You expect 300 round peas and 100 wrinkled peas.
You observed 300 round and 100 wrinkled peas.
What is the p-value? If the exact value is not present, choose the closest value
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- Imagine that Mendel is tending a garden of 100 pea plants. He has 20 plants that are homozygous for the purple allele, 50 plants that are heterozygous, and 30 plants that are homozygous for the white allele. What is the frequency of the purple (P) allele? What is the frequency of the white (p) allele?Imagine that Mendel is tending a garden of 100 pea plants. He has 20 plants that are homozygous for the purple allele, 50 plants that are heterozygous, and 30 plants that are homozygous for the white allele. A) What is the frequency of the purple (P) allele? B) What is the frequency of the white (p) allele?If Mendel chose to study inheritance of height in human, would he have likely discovered the same princeple of heredity that he discovered in working with pea plants? A. Yes, because human height is a continuously varying trait, just like the traits Mendel studied in pea plants. B. No, because the generation time in humans is relatively long compared with pea plants. C. Yes, because the principles of segregation and independent assortment also apply to human genes. D. No, because human height is not genetically determined.
- How was Mendel's Law of Independent Assortment demonstrated by the dihybrid cross he performed with peas?A) The yellow peas always occurred with the round trait in the F2 generation.B) All four phenotype combinations occurred in the F2 generation.C) Yellow was dominant over green, and round was dominant over wrinkled peas.D) Two distinct phenotypes were seen in the F2 generation.E) Mendel's Law of Independent Assortment was not demonstrated by his dihybrid cross, but was demonstrated by his monohybrid cross.In Mendel’s 1866 publication as shown in Figure 1-4, he reports 705 purple-flowered (violet) offspring and 224 white-flowered offspring. The ratio he obtained is 3.15:1 for purple: white. How do you think he explained the fact that the ratio is not exactly 3:1?In a typical one trait experiment of Mendel's, yellow pureline peas (YY) are crossed with green pureline peas (yy). The offspring are yellow. Then, those offspring are selfed. Which statements are / would be true about this experiment?
- In Mendel’s 1866 publication as shown in Figure 1-4,he reports 705 purple-flowered (violet) offspring and224 white-flowered offspring. The ratio he obtained is3.15:1 for purple: white. How do you think he explainedthe fact that the ratio is not exactly 3:1?If the chi-square value came out to 14,224.221 and the p-value was said to be less than 0.01, what do you conclude about whether these traits follow a simple Mendelian inheritance pattern? Explain your answer.Suppose that a Mendel's dihybrid cross between two double heterogotes (AaBb x AaBb) gave you the phenotypic ratio of 15:1, assuming that the dominant allele is completely dominant over the recessive allele. Which of the following is CORRECT? A. The A_B_ and aabb have the same phenotype. (_ means either the dominant allele or recessive allele) B. The aaB_ and aabb have the same phenotype. (_ means either the dominant allele or recessive allele) C. The aaB_ and A_bb have the same phenotype. (_ means either the dominant allele or recessive allele) D. All of the above.
- 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.Why do you think Mendel's finding rejects the blending theory of inheritance?You have decided to start growing pea plants in your garden that are of the same species as the ones Mendel grew to see if you can recapitulate some of his experiments. The two traits you start with are purple vs white flowers and tall vs dwarf (with purple and tall being dominant). A neighbor shares some of their tall, purple flowered plants with you, knowing from those you should be able to get every possible combination, but they warn you that they have not been paying attention to how they are pollinating one another, and therefore they aren’t sure which of them are homozygotes and which are heterozygotes for each trait.What are the possible genotypes for these purple, tall plants?