Name:___________________________
Date: ____________Period:_____
Agenda Week of 19 Jan – 23 Jan 2009 Unit 4 Heredity Exam 2/12-13/09
Class website: www.marric.us/teaching
Monday 1/19/09
Martin Luther King Jr. Holiday
Tuesday 1/20/09 (LEAP 2:30-3:30)
- Unit 4 Quiz 2
- Chapter 10 ppt – Mystery Gene Intro
HW: Ch 10 Sci Notebook due 1/21/09
Wednesday 1/21/09 –Late Start
- Ch 11 Introduction
- Mystery Gene – Computer Lab
HW: Overview vocabulary /SG due 1/30/09
Ch 11 Sci Notebook due 1/30/09
Thursday 1/22/09 – Block Day
- Mystery Gene – Computer Lab
- Ch 11 ppt
- Genetics Practice Problem #3
HW: Ch 11 Sci Notebook due 1/30/09
Study for Unit4 Quiz 3 – Complete Prob #3
Friday 1/23/09 – Block Day
- Mystery Gene – Computer Lab
- Ch 11 ppt
- Genetics Practice Problem #3
HW: Ch 11 Sci Notebook due 1/30/09
Study for Unit4 Quiz 3 – Complete Prob #3
Parents/Guardian –



I have reviewed my child’s activities and
homework for the week of 1/19/09 –
1/23/09.
I understand that is important for me to make
sure that my child is studying to be prepared
for the Quiz on 1/27/09 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 after school.
Parent/Guardian Printed Name
Unit 4 Quiz 3 Jan 27
All work must be shown on Quiz
1. If a corn plant has a genotype of Ttyy, what are the
possible genetic combinations that could be present in a
gamete (single grain of pollen) from this plant?
2. In fruit flies, the gene for red eyes (R) is dominant and the gene for
sepia eyes (r) is recessive. What are the possible combinations of
genes in the offspring of two red-eyed heterozygous flies (Rr)?
3. The appearance of an organism is its ____________
4. A heterozygous round seeded plant is crossed with a
homozygous wrinkled seeded plant. What are the
genotypes of the parents? _________ x ________.
What percentage of the offspring will also be
homozygous? ___________
5. A cross between two plants that have pink flowers
produced plants that have red, pink, or white flowers.
What is the most likely explanation for these results?
6.A homozygous individual would have what possible
genotype?
7. If two parents with dominant phenotypes produce an
offspring with a recessive phenotype, what can you say
about the parents?
Vocabulary words:
Homologous
Hybrid
Probability
Autosomal
Incomplete dominance
Signature
Meiosis
Mitosis
Sex-linked
Co-dominance
Zygote
Date
Bell Ringers: Week of 19 Jan – 23 Jan 2009
Monday – Omar’s science class visits a local science institute. The institute has a room-sized model of
a cell, and the model compares and contrasts the processes of mitosis and meiosis. Which is included in
the model’s explanation?
A. Both processes involve the formation of haploid gametes.
B. Both processes produce genetically identical daughter cells.
C. Mitosis has five phases, while meiosis has only three phases.
D. Mitosis has one cell division, while meiosis has two divisions.
Explain.
Tuesday If two heterozygous individuals are crossed, what percent of their offspring are also expected to be
heterozygous?
Explain, including the genotypes of the individuals crossed (hint: pick the letter “g” for a gene)
Wednesday –
Identify the four nucleotides that make of deoxyribonucleic acid and how their sequence is used to
produce proteins.
Thursday/Friday Describe the genotypes and phenotypes of the two
parents that produce the four possible gamete combinations in the
Punnett square.
Explain.
Kalani observes a woman who manifests the condition known as albinism. Kalani asks her biology teacher
what causes albinism. Which is part of her biology teacher’s explanation?
A. Albinism is a genetic disorder caused by a dominant allele.
B. Albinism is a genetic disorder caused by two recessive alleles.
C. Albinism is caused by environmental factors during childhood.
D. Albinism results from dietary choices of the person as an adult
Name:_________________________________ Date:____________ _ Period:______
Unit 4 Quiz 3 Jan 27 All work must be shown on Quiz
1. The appearance of an organism is its __________________
2. If a corn plant has a genotype of Ttyy, what are the possible genetic combinations that
could be present in a gamete (single grain of pollen) from this plant?
3. In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the
possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)? (2 pts all work shown)
4. A heterozygous round seeded plant is crossed with a homozygous wrinkled seeded plant.
What are the genotypes of the parents? _________ x ________. What percentage of
the offspring will also be homozygous? ___________ (3 pts – all work must be shown)
5. If two parents with dominant phenotypes produce an offspring with a recessive phenotype,
what can you say about the parents?
6. A homozygous individual would have what possible genotype?
7. A cross between two plants that have pink flowers produced plants that have red, pink, or
white flowers. What is the most likely explanation for these results?
8. In certain breeds of dogs, deafness is due to a recessive allele (d) of a particular gene, and
normal hearing is due to its dominant allele (D). What percentage of the offspring of a
normal heterozygous (Dd) dog and a deaf dog (dd) would be expected to have normal
hearing?
a) 0%
b) 25%
c) 50%
d) 100%
Vocabulary words Matching:
______________
A. A type of cell division that produces identical cells
______________
B. the likelihood of an occurrence
______________
C. having to do with a body cell chromosome
______________
D. The situation in which a heterozygote shows the phenotypic effects of both
alleles fully and equally
______________
E. having to do with a sex chromosome
______________
F. A type of cell division that produces gametes
______________
G. Chromosomes with the information to code for the same trait
______________
H. Heterozygous
______________
I. A fertilized egg
______________
J. both alleles of a heterozygote influence the phenotype. The phenotype is
usually intermediate between the two homozygous phenotypes.
Co-dominance
Incomplete dominance
Sex-linked
Mitosis
Homologous
Autosomal
Probability
Meiosis
Hybrid
Zygote
Extra Credit
What is a source of genetic variation?
A adaptation
B mutation
C respiration
D transpiration