1 . WHAT IS LOCATED ON THE CHROMOSOME?
A. CELLULAR ORGANELLES
B. HEREDITARY AND GENETIC INFORMATION
C. INSTRUCTIONS FOR CELL ACTIVITIES
D. ENZYME MATERIALS
2. WHICH OF THE PICTURES BELOW SHOWS A
TRAIT THAT IS NOT INHERITED BY OFFSPRING?
Bell
Work
2/6/15
OBJECTIVES
Describe the relationship among genes, chromosomes, and
inherited traits. (SPI 0707.4.3)
Interpret a Punnett square to predict possible genetic
combinations passed from parents to offspring during sexual
reproduction. (SPI0707.4.4)
PUNNETT SQUARE CHALLENGE
Each group has two different Punnett Square
Challenges in their colored folders. For each
challenge you must create and interpret a Punnett
square to predict possible genetic combinations
passed from parents to offspring during sexual
reproduction.
The following must be written on a loose leaf sheet of
notebook paper:
1.
2.
3.
4.
Crossed Punnett square
All possible genotypes and phenotypes of offspring
The answer to the question (percentages, ratios, etc.)
You and your team have 5 minutes. When you are finished,
work on Science Art.
GROUP #1 CHALLENGE
In dogs, wire hair (W) is
dominant to smooth (w).
What is the percentage in
a cross of a homozygous
wire-haired dog with a
smooth-haired dog?
GROUP #2 CHALLENGE
In rabbits, black fur is
dominant to white fur.
What are the percentages
for a homozygous black
rabbit and a homozygous
white rabbit?
GROUP #3 CHALLENGE
In pea plants, spherical seeds
(S) are dominant to dented
seeds (s). In a genetic cross of
two plants that are
heterozygous for seed shape,
what ratio of the offspring
should have spherical seeds?
GROUP #4 CHALLENGE
In fruit flies, red eyes are
dominant to white eyes.
What is the percentage for
heterozygous fruit fly with
a homozygous recessive
fruit fly?
GROUP #5 CHALLENGE
In humans, pointed eyebrows
are dominant over smooth
eyebrows. What is the ratio
for a homozygous woman
with pointed eyebrows and a
man with smooth eyebrows?
GROUP #6 CHALLENGE
In guinea pigs, smooth coat
(S) is dominant over rough
coat (s) and black coat (B) is
dominant over white coat
(b). What is the ratio for 2
rough coated guinea pigs?
GROUP #7 CHALLENGE
In tomatoes, red fruit (R) is
dominant over yellow fruit.
What will be the percentage
of homozygous yellow
tomato and a heterozygous
tomato?
GROUP #8 CHALLENGE
Shaggy hair in dogs is
dominant to its
recessive allele, short
hair. What is the
percentage of 2
heterozygous dogs?
GENETICS PROJECT
Directions:
1. You will need to choose one female and one male celebrity.
2. For each celebrity, you need to record the phenotype for the traits
listed and pick a genotype. (For example, if Justin Bieber has blonde
hair, the genotype would be “bb”. If Selena Gomez has brown hair,
her genotype would be either “Bb” or “BB”.)
3. Create a Punnett square to express the possible offspring outcomes.
4. Record the trait the offspring will MOST LIKELY inherit.
5. Draw a picture depicting what the offspring should look like based
on inherited traits.
EXIT TICKET
Create your own monohybrid Punnett Square cross word problem.
Use the examples in your notes for ideas.