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Chapter 11 Test Review

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					Chapter 11 Test Review
        Match the Scientists
• 1. Mendel        A. recombination
• 2. Morgan       helps make map
• 3. Sturtevant   B. alleles segregate
•                 C. some genes linked
          Match the Scientists
• 1. Mendel         B. alleles segregate

• 2. Morgan         C. genes linked

    3. Sturtevant      A. recombination
•                    helps make map
     4. What is fertilization?
• Process of sexual reproduction
• Joining egg + sperm
• Joining egg and pollen
  What is true-breeding and hybrid?
• 5. True-breeding = E. offspring are
  identical to parents

• 6. Hybrid = D. offspring are of parents of
  different traits
        7. Genes are____:
• F. the location on a chromosome for
  a trait
     PUNNETT PRACTICE
• p.3 Dihybrid Cross
• What are the parental genotypes?
• Heterozygous running, heterozygous
  black mouse
• Homozygous running, homozygous
  black mouse
     PUNNETT PRACTICE
• p.3 Dihybrid Cross
• What are the parental genotypes?
• Heterozygous running, heterozygous
  black mouse RrBb
• Homozygous running, homozygous
  black mouse RRBB
    PUNNETT PRACTICE
• Dihybrid Cross
• How many boxes to you
  need for a dihybrid cross?

• ANSWER:
• 16
     PUNNETT PRACTICE
• Show how you would place the parental
  alleles on each side of the Punnett
  Squares:
     RB   Rb   rB   rb

RB


RB

RB


RB
NOW FILL IN THE BOXES AND

• WHAT IS THE
  PHENOTYPIC RATIO?
 100% running black
     RB      Rb      rB      rb

     RRBB   RRBb   RrBB   RrBb
RB

     RRBB   RRBb   RrBB   RrBb
RB

RB   RRBB   RRBb   RrBB   RrBb

     RRBB   RRBb   RrBB   RrBb
RB
            8. Gametes are:
•   A. body cells
•   B. sex cells
•   C. somatic cells
•   D. skin cells

• ANSWER: sex cells B
    9. The likelihood that a particular
           event will occur is:
•   A. hybrid
•   B. offspring
•   C. probability
•   D. recombination

• ANSWER: C probability
      10. The wild type is…
• A. dominant trait
• B. recessive trait
• C. most common trait

• ANSWER: C
        11. homologous
• D. male +
  corresponding
  female set of
  chromosomes
GO TO PUNNETT PRACTICE
• On your dry erase board.
• Do #4 on page 2.
• Cross two plants that are
  heterozygous for green pods.
            #4 Answer
Genotypic ratio:
 GG:Gg:gg               G   g

  1: 2: 1           G   GG Gg
                    g
                        Gg gg
Phenotypic ratio:
 Green:yellow
      3:1
  12. Haploid and 13. Diploid
• 13. C. one set of chromosomes
         N
         in humans 23

14. B. two sets of homologous
 chromosomes
      2N
      in humans 46
       14. What is a tetrad?
• A. 4 homologous chromosomes
  MULTIPLE ALLELE TRAITS IN
         CHICKENS
• Question #1:On the cross pictured,
  what must be the genotypes of the two
  parents for the outcome to always be a
  buttercup offspring?



• ANSWER:
• rrPP   X RRpp
     Did you set it up right?
      RP      Rp      rP        rp


RP


Rp

rP
rp
            9:3:3:1
      RP     Rp       rP      rp

     RRPP   RRPp   RrPP    RrPp
RP
     RRPp   RRpp   RrPp    Rrpp
Rp
     RrPP   RrPp   rrPP    rrPp
rP
rp   RrPp   Rrpp   rrPp    rrpp
       15. Crossing-over
• F. homologous chromosomes
  exchange segments
        16. What is a chiasma?
•   A. when 4 chromosomes come together
•   B. when a cell divides into 4 cells
•   C. when a cell splits
•   D. making poopie
•   E. is the point of crossing over of the two
    inner homologous chromosomes

• ANSWER: E
    17. Contrast Mitosis and Meiosis

• Mitosis:
•   starts with 2N parent
•   Daughter cells are 2N
•   Daughter cells identical
•   Makes somatic cells
•   Ends with 2 cells
•   1 division
    17. Contrast Mitosis and Meiosis

• Meiosis:
•   starts with 2N parent
•   Daughter cells are N
•   Daughter cells different
•   Makes sex cells
•   Ends with 4 cells
•   2 divisions
18. If you had a tall plant, how can
       you tell if it is TT or Tt?
                         T   t
• Cross it with tt
• (a test cross)     t
                     t
      T          T

t


t
18. If you had a tall plant, how can
       you tell if it is TT or Tt?
                               T        t
• Cross it with tt
                          Tt       tt
                      t
                      t   Tt       tt
         T        T
    Tt       Tt
t


t   Tt       Tt
19. Spongebob SsYy marries and
    mates Spongebetty ssYy
        Y=yellow y=blue
       S=square s=round
19. Spongebob SsYy marries and
    mates Spongebetty ssYy
        Y=yellow y=blue
       S=square s=round
            19. SsYy X ssYy

     SY       Sy     sY     sy
     SsYY   SsYy   ssYY   ssYy
sY
sy SsYy     Ssyy   ssYy   ssyy

     SsYY   SsYy   ssYY   ssYy
sY
     SsYy   Ssyy   ssYy   ssyy
sy
            19. SsYy X ssYy

     SY       Sy     sY     sy
     SsYY   SsYy   ssYY   ssYy
sY
sy SsYy     Ssyy   ssYy   ssyy

     SsYY   SsYy   ssYY   ssYy
sY
     SsYy   Ssyy   ssYy   ssyy
sy
 6 square yellow     6 round yellow
   2 square blue     2 round blue

     SY      Sy      sY     sy
     SsYY   SsYy   ssYY   ssYy
sY
sy SsYy     Ssyy   ssYy   ssyy

     SsYY   SsYy   ssYY   ssYy
sY
     SsYy   Ssyy   ssYy   ssyy
sy
20. Flower Parts
 EXTRA: Male Flower Parts?
• Stamen pistil
  stigma anther



• ANSWER:
  stamen anther
 21. Hetero or Homo zygous

• _____HH _____hh _____Hh

• ANSWER:
• Homozygous Heterozygous
• HH hh           Hh
     EXTRA: Recessive?

•T   t   H   h

• ANSWER: t      h
     EXTRA: Dominant?

•T    t   H   h

• ANSWER: T H
  CHECK YOUR SKILLS: Go to
     Punnett Practice #7
• Genotypic Ratio?
• Phenotypic Ratio?
             Nn x nn
•            N   n
                       Genotypic:
                       Nn:nn
    n   Nn       nn
                       2 : 2
                       Phenotypic
        Nn       nn    Smooth;const.
    n
                           2   :    2
      CHECK YOUR SKILLS:
          BbFf x bbff
• How many boxes do you need?
  16
• How do you separate each parent?
  BF Bf bF     bf
• bf bf bf      bf
      BF      Bf      bF          bf
bf   BbFf   Bbff   bbFf    bbff


bf
   BbFf     Bbff   bbFf    bbff

     BbFf   Bbff   bbFf    bbff
bf
     BbFf   Bbff   bbFf    bbff

bf
• Genotypic Ratio
• BbFf : Bbff : bbFf : bbff
• 4      4      4      4

• Phenotypic Ratio
• Black fat : black thin : white fat : white thin
•   4            4           4          4
       CHECK YOUR SKILLS:
    RR x RW incomplete dominance
•          R     R

     R




     W
      CHECK YOUR ANSWER:
    RR x RW incomplete dominance
•          R     R      Genotypic
                        RR : RW
     R     RR    RR         2   2


                        Phenotypic
     W    RW    RW
                        Red : Pink
                        2       2
              #22
• Black rooster and white
  chicken form black and white
  spotted chicks

• ANSWER: codominance
                #23
• The color of the skin is
  determined by six different
  locations on genes

• ANSWER: polygenic trait
                #24
• A red flower is crossed with a
  white flower to make pink
  offspring.

• ANSWER: incomplete
  dominance
             #25
• TT x WW = TW offspring

• ANSWER: codominance
               #26
• Eye color alternatives include
  blue, brown, green, black



• ANSWER: multiple alleles
                #27
• A black rabbit crossed with a white
  rabbit produced a gray rabbit



• ANSWER: incomplete dominance
                      #29
• ANSWER: The
  higher the
  crossover
  frequency, the
  farther apart are
  the genes.
                  #28
• The greater the number of
  recombination frequencies
  (crossovers), then the _____ the genes
  are to each other.



• ANSWER: farther apart
                   #29
• Red, hair freckles, and fair skin seem to
  be inherited together. They must be on
  _____ genes.



• ANSWER: linked
               #30
• The location on a chromosome is
  referred to as the:



• ANSWER: locus    gene
 Back of chicken worksheet:

•Do questions
 #1 and #2
• Incomplete dominance = the offspring
  show trait in-between the two dominant
  traits (like black and white have gray
  offspring)

• Codominance = both dominant traits will
  appear like black and white will have
  spotted black-white offspring
• Genotype for black chickens BB

• Genotype for white chickens WW

• Genotype for erminette     BW
                  #31
• What is the difference between a trait
  and an allele?


• TRAIT: general description EX; eye
  color, height

ALLELE: alternative choices EX: blue
 and green, and tall-short
A-B = 29%    B-C=11% B-D=4%
           A-D = 21 %
         ADD: A-C =18%
              C-D = 3%
 What is the order of these genes?

 • ANSWER: A      C   D   B
32. Names of the phases in
        meiosis:
     32. Names of the phases in
             meiosis:


              Anaphase II
Anaphase I                            Prophase I




Metaphase I
              Metaphase II          Telophase I




Prophase II          Telophase II
#33 Structures of Prophase I
   Go to Back and do “Polygenic
     Inheritance” Worksheet
• Human Skin Shades

• Mulatto denotes a person with one
  white parent and one black parent, or
  more broadly, a person of mixed
  black and white ancestry. May also
  include Native American and other
  backgrounds.
    KNOW YOUR MATCHING
• Numbers of descriptions of offspring
• phenotypic ratio

• Numbers of letters of offspring , TT, Tt, tt
• genotypic ratio

• Trait that is expressed even if other trait is
  present
• dominant
       32. MATCHING (cont.)
• Trait that is only expressed if the dominant
  trait is not present
• recessive

• Alternative choices of a trait
• alleles
       32. MATCHING (cont)
• General description of a gene
• trait

• Plant’s pollen fertilizes the same plant
• self-pollination

• Plant’s pollen fertilizes a different plant
• cross-pollination
        Can You Identify?




locus
    Compare egg and sperm:
• Egg forms one large egg and three
  smaller polar bodies

• Sperm form all the same size and
  shape
What is the purpose of the Punnett
             Square?
•   A. show the exact offspring
•   B. show only dominant offspring
•   C. predict the probability from a cross
•   D. predict who will win the sperm lotto

• ANSWER: C
    Independent Assortment and
          Crossing Over
• Independent Assortment randomly
  segregates the alleles.

• Crossing-over breaks and reattaches
  chromosomes to make new gene
  arrangements.


• BOTH INCREASE DIVERSITY
                ESSAYS?
•   Punnett Squares
•   Monohybrid Cross
•   Codominant or Incomplete Dominant
•   Dihybrid Cross

Be able to write a genotypic and phenotypic
 ratio.

				
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posted:4/17/2013
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