Lecture 27 Genetics II

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

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 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. 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 . 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. 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....
View Full Document

This note was uploaded on 04/02/2012 for the course BIO 141 taught by Professor Dr.cafferty during the Fall '11 term at Emory.

Page1 / 11

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

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online