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Heredity is defined as:

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Anne is pregnant with Scott's child. What is the chance that the baby will have type A blood? ... Scott and Susan's son, Paul, is willing to donate blood to a ... – PowerPoint PPT presentation

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Title: Heredity is defined as:


1
Heredity is defined as
  • Transmission of characteristics from parents to
    offspring

2
When two or more alleles result in an appearance
in between the dominant and recessive trait, this
is called
  • Incomplete dominance

3
Traits that result from genes on the X chromosome
are called
  • X-linked traits

4
Define crossing over
  • The exchange of genes among homologous
    chromosomes occurs during prophase I of meiosis

5
Mendel found that pea pod color and pea pod shape
are separate genes that occur independently from
one another. This describes the law of
  • Independent assortment

6
The study of structure and function of genes is
called
  • Molecular genetics

7
How is the F2 generation produced?
  • Crossing two organisms from F1

8
You have a pea plant that displays the dominant
phenotype, but you dont know if the plant is
heterozygous or homozygous. How could you find
out?
  • Conduct a testcross cross it with a plant that
    is homozygous recessive

9
The gene for sickle-cell anemia causes multiple
phenotypic characteristics. This is an example of
  • Pleiotrophy one gene responsible for multiple
    phenotypic effects

10
Mendel discovered paired genes separate during
the formation of gametes. This led to the law of
  • segregation

11
Set up a punnett square using the following
informationDominate allele for long wings
LRecessive allele for short wings l Cross a
heterozygous parent (Ll) with a heterozygous
parent (Ll)
  • a. What is the probability of producing
    individuals homozygous for long
    wings? b. What is the probability of producing
    individuals homozygous for short
    wings? c. What is the probability of producing
    individuals heterozygous for long
    wings? d. What is the probability of producing
    individuals heterozygous for short wings?

12
Set up a punnett square using the following
informationDominate allele for black fur in
guinea pigs BRecessive allele for white fur in
guinea pigs bDominate allele for rough fur in
guinea pigs RRecessive allele for smooth fur
in guinea pigs rCross a heterozygous parent
with a homozygous recessive parent
  • a. What is the probability of producing guinea
    pigs with black, rough fur?
  • Possible genotype(s)?
  • b. What is the probability of producing guinea
    pigs
  • with black, smooth fur?
  • Possible genotype(s)?

13
  • c. What is the probability of producing guinea
    pigs
  • with white, rough fur?
  • Possible genotype(s)?
  • d. What is the probability of producing guinea
    pigs
  • with white, smooth fur?
  • Possible genotype(s)?

14
Anne is pregnant with Scott's child.  What is the
chance that the baby will have type A
blood?Use the table on the blood type handout
as a key to solving the next few blood type
problems. 
  • Susan is the mother of Charlie's first two
    children.  The oldest, Dawn, has type AB blood
    while her sister, Kate, has type B blood. 
    Charlie is now expecting a baby with Anne.  What
    is the chance that this child will have type O
    blood? 

15
  • .  Scott and Susan's son, Paul, is willing to
    donate blood to a young girl with leukemia.  If
    the recipient has type O blood, will Paul be able
    to donate to her?

16
  • Mr. and Mrs. Yardaz are expecting their second
    child. Both parents have pointed ears but the
    couples 2-year old son has round ears. What is
    the chance that their second born will have
    pointed ears?

17
  • Doug Doouge has four arms. Dougs pregnant wife
    only has two arms. Doug would really like a
    daughter that has four arms just like him. What
    is the chance that Dougs wife will give birth to
    a baby girl with four arms?

18
  • In four oclock flowers, red plants are
    homozygous for the allele R for flower color.
    Plants with white flowers are homozygous for r.
    Plants with pink flowers are heterozygous. What
    is the phenotypic ratio of cross between two pink
    plants?
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