Lecture 27 Genetics II

Lecture 27 Genetics II - Biol141 Foundations in Modern...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Biol141 Foundations in Modern Biology Cellular Biology and Genetics Lecture 27 – Wednesday, November 2 nd , 2011 Genetics II—Dihybrid cross. Reading: Freeman, Emory 2 nd Ed. Chapter 13 pages 234-238.
Image of page 1

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

View Full Document Right Arrow Icon
Mendel s first law is called the law of segregation : Each gamete receives one member of a pair of alleles. Determination of possible allelic combinations resulting from fertilization can be accomplished by means of a Punnett square .
Image of page 2
3. Now it is known that a gene is a portion of the chromosomal DNA that resides at a particular site (called a locus ) and that the gene codes for a particular function. ! Mendel arrived at the law of segregation with no knowledge of meiosis or chromosomes. ! Today, the known mechanism of chromosome separation in meiosis I explains his law of segregation.
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
4. A test cross of an individual with a dominant trait with a true-breeding recessive (homozygous recessive) can determine whether the individual with the dominant trail is heterozygous or homozygous.
Image of page 5

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

View Full Document Right Arrow Icon
Image of page 6
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