Title: Chapter 14 Mendel and the Gene Idea
1Chapter 14Mendel and the Gene Idea
2Chapter 14Mendel and the Gene Idea
3Chapter 14Mendel and the Gene Idea
- Law of Segregation
- Two alleles are packaged into separate gametes.
4Chapter 14Mendel and the Gene Idea
- Law of Independent Assortment
5Chapter 14Mendel and the Gene Idea
- Law of Independent Assortment
- Each pair of alleles segregates into gametes
independently.
6Chapter 14Mendel and the Gene Idea
7Chapter 14Mendel and the Gene Idea
- Rules of probability
- The probability of a compound event is equal to
the product of the separate probabilities of the
independent single events.
8Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple
9Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - incomplete dominance
10Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - incomplete dominance
white red
flowers flowers
11Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - incomplete dominance
pink
flowers
12Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - codominance
13Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - codominance
type A type B
blood blood
14Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - codominance
type AB
blood
15Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - codominance
16Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - multiple alleles
17Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - multiple alleles
red blond brown black
hair hair hair hair
18Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - multiple alleles
19Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - pleiotropy
20Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - pleiotropy
sickle cell anemia
21Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - pleiotropy
sickle cell anemia
crippling immunity
joint pain to malaria
22Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - epistasis
23Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - epistasis
brown pigment
white mouse
24Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - epistasis
brown pigment
brown mouse
depositing pigment
25Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
26Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
pigment 1 pigment 2 pigment 3
skin color
27Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
pigment 1 pigment 2 pigment 3
skin color
28Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
pigment 1 pigment 2 pigment 3
skin color
29Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
pigment 1 pigment 2 pigment 3
skin color
30Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple - polygenetic traits
31Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple. - environmental factors
32Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple. - environmental factors
fur turns white in cold weather
brown rabbit
33Chapter 14Mendel and the Gene Idea
- The relationship between phenotype and genotype
is rarely simple. - environmental factors
fur turns white in cold weather
white rabbit
34Chapter 14Mendel and the Gene Idea
- Pedigree analysis reveals Mendelian patterns in
human inheritance
35Chapter 14Mendel and the Gene Idea
- Pedigree analysis reveals Mendelian patterns in
human inheritance. - Many human disorders follow Mendelian patterns of
inheritance.
36Chapter 14Mendel and the Gene Idea
- Technology provides tools for genetic testing and
counseling
37Chapter 14Mendel and the Gene Idea
- Technology provides tools for genetic testing and
counseling - Family histories
38Chapter 14Mendel and the Gene Idea
- Technology provides tools for genetic testing and
counseling - Family histories
- Amniocentesis
39Chapter 14Mendel and the Gene Idea
- Technology provides tools for genetic testing and
counseling. - Family histories
- Amniocentesis
- Chorionic villus
- sampling.