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11.2 COMPLEX PATTERNS OF HUMAN INHERITANCE

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11.2 COMPLEX PATTERNS OF HUMAN INHERITANCE WHAT YOU WILL LEARN-Distinguish between various complex inheritance patterns-PREDICT/ANALYZE outcomes – PowerPoint PPT presentation

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Title: 11.2 COMPLEX PATTERNS OF HUMAN INHERITANCE


1
11.2 COMPLEX PATTERNS OF HUMAN INHERITANCE
  • ?WHAT YOU WILL LEARN
  • -Distinguish between various complex inheritance
    patterns
  • -PREDICT/ANALYZE outcomes
  • -How environment can influence a trait

2
READING Qs
  • 1-DESCRIBE
  • What effect sickle-cell anemia has on red blood
    cells
  • -changes them to sickle or C-shaped.

3
READING Qs
  • 2-EVAULUATE
  • -What is the most common blood type?
  • -O

IAIA IAi IBIB IBi IAIB ii
4
READING Qs
  • 3-EVALUATE
  • -What allele is dominant of Cch
  • -C

5
READING Qs
  • 4-IDENTIFY
  • -A person has 22 pairs of autosomes and 2 X
    chromosomes.
  • What is the persons gender?
  • -FEMALE

6
READING Qs
  • 5-DRAW CONCLUSIONS
  • -Why is a recessive sex-linked trait less likely
    to occur in females than in males?
  • -males must inherit only one allele (AFFECTED X)
    to have trait

7
READING Qs
  • 6-PREDICT
  • -Circle the genotype that represents a
    color-blind person
  • -XbY

8
READING Qs
  • 7-LIST
  • -An example of a polygenic trait.
  • -skin color
  • -height
  • -eye color
  • -fingerprint pattern

9
READING Qs
  • 8-EVALUATE
  • -Circle the trait that shows the strongest
    genetic influence
  • -blood types

10
GROUP WORK APPLICATION NOTES
  • -As a cooperative group complete the note sheet
    using your knowledge from the reading/discussion.
  • ?HIGHLIGHT/MARK supporting info
  • ?BOOK-302-310
  • -As a cooperative group complete the 11.2 VOCAB
  • -ALL GROUP MEMBERS AGREE on SAME DEFINITION
  • -may have DIFFERENT EXAMPLES picture or words

11.2 VOCAB
11
?MAIN IDEA
  •  
  • -Complex Inheritance traits are an EXCEPTION to
    Mendels research

12
?VOCABULARY
  • REVIEW gamete
  • -mature sex cell with half (haploid) of
    chromosomes
  • 1-any chromosomes that are not sex chromosomes
  • AUTOSOMES
  • 2-inheritance patterns-BOTH allele traits
    expressed in phenotype of hetero indv.
  • CODOMINANCE
  • 3- interaction of alleles with one allele masking
    effects of the other
  • EPISTASIS
  • 4-inheritance pattern-phenotype is a MIX of the 2
    homozygous parent traits
  • INCOMPLETE DOMINANCE
  •  

13
?VOCABULARY
  • 5-presence of more than 2 alleles for a genetic
    trait
  • MULTIPLE ALLELES
  • 6-inheritance pattern-trait controlled by 2 or
    more genes on same/different chromosomes
  • POLYGENIC TRAIT
  • 7- chromosomes determine the sex of an
    individual, carry sex-linked characteristics
  • SEX CHROMOSOMES
  • 8-traits controlled by genes located on sex
    chromosomes
  • SEX-LINKED TRAITS 

14
?INCOMPLETE DOMINANCE
  • ANALYZE the ratios of offspring

15
?CODOMINANCE
  • DETERMINE Rnormal dominant Rsickle cell
    recessive
  • The correct coloumn for each phenotype

x
x
x
16
?COMDOMINANCE
  • PREDICT the results of two people who are
    heterozygous for sickle-cell anemia but lead
    normal lives have a child
  • RR x RR
  • 25 RR no alleles for disease
  • 50 RR heterozygous/ lead normal lives
  • 25 RR homo recessive/ sickle cell disease

17
?MULTIPLE ALLELES
  • IDENTIFY
  • the blood group that results from each
    combination of genotypes

18
?EPISTASIS,SEX DET,DOSAGE COMP,SEX LINKED,
POLYGENIC
  • ANALYZE
  • the role of each inheritance. Give example.

19
?EPISTASIS,SEX DET,DOSAGE COMP,SEX LINKED,
POLYGENIC
  • REFER to punnett square to answer questions
    sex-linked
  • DETERMINE gender, color vision
  • 1-Does the father have color-blindness? ?yes
    ?no
  • 2-Does the father have a recessive allele?
    ?yes ?no
  • 3-What gender is the child with color-blindness?
    ?male ?female

x
x
x
20
?ENVIRONMENTAL STUDIES
  • IDENTIFY
  • Environmental influences that can affect
    phenotype

21
?TWIN STUDIES
  • DESCRIBE
  • The use of twin studies in the study of genetics.
  • Scientists use twin studies to distinguish
    between __________________ and __________________
    influences on a trait. If a high percentage of
    ________________________ but not
    ________________________ express a trait, there
    is a strong chance that the trait is
    __________________.

genetic
environmental
identical twins
fraternal twins
genetic
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