{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

8147480-AP-Bio-Chapter-Fifteen-The-Chromosomal-Basis-of-Inheritance

8147480-AP-Bio-Chapter-Fifteen-The-Chromosomal-Basis-of-Inheritance

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
UNIT THREE: GENETICS Chapter Fifteen: The Chromos (Text from Biology , 6 th Edition, b The Chrom RE Mendelian Inheritance Has Its P Cycles Connections between Mendel’s began to be made in around 190 Boveri, and others independentl inheritance inheritance inheritance, which states that M chromosomes, and it is the chro independent assortment. Morgan Traced a Gene to a Spec Thomas Morgan was the first to chromosome. Morgan’s Choice of Experimenta Morgan chose a spe growing on fruit. A mature in two week distinguishable with X chromosomes, wh normal phenotype f Alternatives to the w assumed to have ori Discovery of Sex Lin After Morgan discovered a male The resulting offspring had red e he bred the first generation to e However, the white-eye trait on affecting his white-eyed mutant there was no corresponding eye was recessive, females could on chromosomes. Since a male onl type allele to offset the recessiv Sex Sex-linked genes linked genes linked genes are those loca somal Basis of Inheritance somal Basis of Inheritance by Campbell and Reece) mosomal Basis of Inheritance (Chapter Fiftee ELATING MENDELISM TO CHROMOSOMES Physical Basis in the Behavior of Chromosomes D discoveries and chromosomal behavior 00. In 1902, Walter Sutton, Theodor ly formed a chromosome theory of chromosome theory of chromosome theory of chromosome theory of Mendelian genes have specific loci on omosomes that undergo segregation and cific Chromosome o associate a specific gene with a specific tal Organism ecies of fruit fly, Drosophila melanogaster , which single mating of fruit flies produces hundreds of ks. Additionally, fruit flies only have four pairs of h even a light microscope. Female fruit flies hav hile males have one X and one Y chromosome. H for a character is called the wild type wild type wild type wild type, such as re wild type are called mutant phenotypes , becaus iginated as changes or mutations in the wild-typ inkage fly with white eyes, he mated it with a red-eyed eyes, which suggested that red eyes were domin each other, he found the usual 3:1 phenotypic rat nly showed up in males. Morgan deduced that th t was located exclusively on the X chromosome -color locus on the Y chromosome. Since the m nly have white eyes if she received the allele on t ly received one copy of the gene, there would be ve allele. ated on a sex chromosome. 1 een) During Sexual Life h feeds on the fungi f offspring that can f chromosomes, easily ve a homologous pair of He established that the ed eyes in Drosophila . se they are due to alleles pe allele. d female. nant. When tio. he gene e, where mutant allele two e no wild-
Background image of page 1

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

View Full Document Right Arrow Icon
2 UNIT THREE: GENETICS Chapter Fifteen: The Chromosomal Basis of Inheritance Chapter Fifteen: The Chromosomal Basis of Inheritance Chapter Fifteen: The Chromosomal Basis of Inheritance (Text from Biology , 6 th Edition, by Campbell and Reece) Linked Genes Tend to Be Inherited Together Because They are Located On the Same Chromosome
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}