Name:___________________________
Date: ____________Period:_____
Agenda Week of 21 Jan – 25 Jan 2008 Unit 4 Genetics-Heredity Exam 2/5/08
Class website: www.marric.us/teaching
Monday 1/21/08
Martin Luther King Jr. Holiday
HW: Overview vocabulary /SG due 2/5/08
SG check on Th/Fr
Tuesday 1/22/08 (LEAP 2:30-3:30)
- Unit 4 Quiz 2
- Chapter 11 – Human Genetics Sci
Notebook (due 1/25) or Study Guide
HW: Overview vocabulary /SG due 2/5/08
Wednesday 1/23/08 –Late Start
- Sex-linked Genetic Problems #6 (HW)
HW: Overview vocabulary /SG due 2/5/08
Thursday 1/24/08 – Block Day
- Study Guide - check
- Dihybrid Crosses Problems #7
- Pedigrees
HW: Overview vocabulary /SG due 2/5/08
study for Unit4 Quiz 3
Friday 1/25/08 – Block Day
- Study Guide 1-50 - check
- Dihybrid Crosses Problems #7
- Pedigrees
HW: Overview vocabulary /SG due 2/5/08
study for Unit4 Quiz 3
Parents/Guardian –



I have reviewed my child’s activities and
homework for the week of 1/21/08 –
1/25/08.
I understand that is important for me to make
sure that my child is studying to be prepared
for the Quiz on 1/29/08 and has completed
all assignments this week.
I understand if my child needs to retake a quiz
that the original quiz with corrected answers,
signed by a parent, must be turned in when
the quiz is retaken on Tuesdays either at
lunch or after school.
Parent/Guardian Printed Name
Unit 4 Quiz 3 Jan 29
All work must be shown on Quiz
1. A man with a certain syndrome marries a woman who
is normal for that trait. They have 6 children, three
girls and three boys. All of the girls have the same
syndrome as the father whereas none of the boys is
affected. Which type of heredity is not possible here?
2. Given that the dominance hierarchy of rabbit fur
color alleles is C > Cch > Ch, from grey to chinchilla to
Himalayan, respectively, what would be the percentage
of Himalayan colored rabbits from parents with C C h
and Cch Ch?
3. A cross between a white rooster and a black hen
results in 100% blue Andalusian offspring. When two of
these blue offspring are mated, the probable phenotypic
ratio seen in their offspring would be
_________________________________________.
4. A true-breeding tall pea plant is crossed with a truebreeding short pea plant, and all the offspring are tall.
What is the most likely genotype of the offspring
assuming a single-gene trait?
5. In mice, black is dominant to white color and color is
determined by a single gene. Two black mice are
crossed. They produce 2 black offspring and one white
offspring. If the white offspring is crossed with one of
its parents, what percent of the offspring are expected
to be white?
Vocabulary words:
Homologous
Hybrid
Probability
Autosomal
Incomplete dominance
Signature
Meiosis
Mitosis
Sex-linked
Co-dominance
Zygote
Date
Bell Ringers: Week of 21 Jan – 25 Jan 2008
Monday – A pea plant homozygous for the trait of smooth seeds is crossed with a pea plant that is
homozygous for the trait of wrinkled seeds. The first generation produces seeds that are all smooth.
What percent of the second-generation plants will have smooth seeds when the F1 generation is selffertilized?
Tuesday If two heterozygous individuals are crossed, what percent of their offspring are also expected to be
heterozygous?
Explain.
Wednesday –
In which situation are the phenotypes of F2 offspring expected to follow the ratio of 9:3:3:1.
a. a monohybrid cross for 2 unlinked traits
b. a monohybrid cross for 2 closely linked traits
c. a dihybrid cross for 2 unlinked traits
d. a dihybrid cross for 2 closely linked traits
Explain.
Thursday/Friday Nondisjunction is related to a number of serious human disorders.
How does nondisjunction cause these disorders?
a. alters the number of gametes produced
b. alters the number of zygotes produced
c. alters the chromosome structure
d. alters the chromosome number
Explain.
What occurs during the process of meiosis in humans that can lead to a child with the condition of Down
syndrome?
a. production of a duplicate chromosome set
b. production of gametes which are diploid
c. production of gametes with one duplicate chromosome
d. production of gametes with one duplicate sex chromosome
Explain.
Name:_______________________________ Date:____________________ Period:______
Unit 4 Quiz 3 Jan 29 All work must be shown on Quiz
1. A man with a certain syndrome marries a woman who is normal for that trait. They have 6 children,
three girls and three boys. All of the girls have the same syndrome as the father whereas none of the
boys is affected. Which type of heredity is not possible here?
2. Given that the dominance hierarchy of rabbit fur color alleles is C > Cch > Ch, from grey to chinchilla
to Himalayan, respectively, what would be the percentage of Himalayan colored rabbits from parents
with C Ch and Cch Ch?
3. A cross between a white rooster and a black hen results in 100% blue Andalusian offspring. When
two of these blue offspring are mated, the probable phenotypic ratio seen in their offspring would be:
4. A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring
are tall. What is the most likely genotype of the offspring assuming a single-gene trait?
5. In mice, black is dominant to white color and color is determined by a single gene. Two black mice are
crossed. They produce 2 black offspring and one white offspring. If the white offspring is crossed
with one of its parents, what percent of the offspring are expected to be white?
6. Nondisjunction is related to a number of serious human disorders.
How does nondisjunction cause these disorders?
a. alters the number of gametes produced
b. alters the chromosome number
c. alters the chromosome structure
d. alters the number of zygotes produced
Vocabulary words Matching (11 – 20):
_____ Zygote
A. A type of cell division that produces identical cells
_____ Homologous
B. the likelihood of an occurrence
_____ Hybrid
C. having to do with a body cell chromosome
_____ Meiosis
D. The situation in which a heterozygote shows the phenotypic effects of
both alleles fully and equally
_____ Mitosis
E. having to do with a sex chromosome
_____ Probability
F. A type of cell division that produces sex cells
_____ Sex-linked
G. Chromosomes with the information to code for the same trait
_____ Autosomal
H. Heterozygous
_____ Co-dominance
I. A fertilized egg
_____Incomplete
dominance
J. both alleles of a heterozygote influence the phenotype. The phenotype is
usually intermediate between the two homozygous phenotypes.
Extra Credit