PS1_Key - BICD100 Reinagel 2005 PROBLEM SET 1 Monohybrid...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BICD100 Reinagel 2005 PROBLEM SET 1 Monohybrid Crosses ANSWER KEY 1. In Mendel's "Experiment 1," true breeding pea plants with spherical seeds were crossed with true breeding plants with dented seeds. (Spherical seeds are the dominant characteristic). Mendel collected the seeds from this cross, grew F1-generation plants, let them self-pollinate to form a second generation, and analyzed the seeds of the resulting F2 generation. a. What is the genotype of the F1 plant? Parents are SS and ss; the F1 plants are Ss b. What are the possible genotypes of the F1 plant’s seeds? In what ratio? S or s, 1:1 This question might have been a bit confusing. I should have said “gametes” c. What are the genotypes of the F2 generation plants? 1 SS : 2 Ss: 1 ss S s S SS Ss s Ss ss d. What percent spherical-seeded plants did he obtain in the F2 generation? “he” means Mendel… he got 5,471 spherical : 1850 dented or 74.74% e. What percentage would you predict? Both SS and Ss are spherical so based on ratios in part (c), 75% should be spherical. 2. When true-breeding pea plants with axial flowers are crossed with true-breeding pea plants with terminal flowers in Mendel’s experiments, a. Which trait was dominant, based on the F1 phenotype? Axial (distributed), see Mendel p.8 b.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern