IM_chapter10 - 10 _ OBSERVING PATTERNS IN INHERITED TRAITS...

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

View Full Document Right Arrow Icon
10                                                                                                                                                                ______________________________________________________________________________ OBSERVING PATTERNS  IN INHERITED TRAITS Chapter Outline IMPACTS, ISSUES: MENACING MUCUS MENDEL’S INSIGHT INTO INHERITANCE  PATTERNS  Mendel’s Experimental Approach  Terms Used in Modern Genetics  MENDEL'S THEORY OF SEGREGATION  Monohybrid Cross Predictions Testcrosses  MENDEL'S THEORY OF INDEPENDENT  ASSORTMENT MORE PATTERNS THAN MENDEL  THOUGHT ABO Blood Types—A Case of  Codominance Incomplete Dominance Single Genes With a Wide Reach When Products of Gene Pairs Interact COMPLEX VARIATION IN TRAITS Regarding the Unexpected Phenotype Continuous Variation in Populations GENES AND  THE ENVIRONMENT SUMMARY SELF-QUIZ GENETICS PROBLEMS Objectives 1. Know  Mendel’s principles of dominance, segregation, and  independent  assortment. 2. Understand  how  to solve genetics problems that involve monohybrid  and  dihybrid  crosses. 3. Understand  the variations that can occur in observable patterns of inheritance. Key Terms genes locus diploid mutation alleles true-breeding  lineage hybrids homozygous heterozygous dominant  allele recessive allele homozygous  dominant Observing  Patterns  in Inherited  Traits 69
Background image of page 1

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

View Full DocumentRight Arrow Icon
homozygous  recessive heterozygous genotype phenotype P, F 1 , F 2 monohybrid  cross probability Punnett-square method testcross Mendel's theory of  segregation dihybrid  cross Mendel's theory of  independent   assortment codominance ABO blood typing multiple allele system incomplete dominance pleiotropy Marfan syndrome melanin albinism campodactyly continuous  variation environmental effects Lecture Outline Impacts, Issues: Menacing Mucus A. Cystic fibrosis is a debilitating  genetic disorder. 1. Persons  with  two  recessive genes will suffer from  excessive accumulations  of mucus  in  their lungs. 2. The location of the defective gene was identified in 1989. B. A campaign  for mass screening  of prospective parents  was initiated  in 2001, but  it has met   with mixed success. 10.1 Mendel’s Insight into Inheritance Patterns  A. Introduction 1. By the  late  nineteenth  century,  natural  selection  suggested  that  a  population  could   evolve  if members  show  variation  in heritable  traits. Variations  that  improved  survival   chances  would  be  more  common  in  each  generation—in  time,  the  population  would  
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.

Page1 / 4

IM_chapter10 - 10 _ OBSERVING PATTERNS IN INHERITED TRAITS...

This preview shows document pages 1 - 3. Sign up to view the full document.

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