Download Part 3: Genetic Predictions Practice

Name: ______________________________________________ Teacher: Rozema Hour: ____________
Unit 6-Heredity Unit
Quiz #2 Review & Practice
Part 1: Fill In The Blank Summary

All individuals inherit ___________ alleles per _____________________________.

One gene comes from our ______________________________ (from her egg cell), and one gene comes from
our _______________________________ (from his sperm cell).


When we inherit alleles, we can inherit…
o
Two of the _____________________ variations. This is called __________________________________.
o
Two ______________________ variations. This is called ___________________________________.
There are 2 types of allele variations we can inherit:
___________________________________ and _____________________________________

____________________________________ traits always show up.

____________________________________ traits only show up when ____________ are inherited together.

We can use something called a _________________ chart to show the genotypes of parents and their offspring.

In a PCR Chart, _______________________________________________ represents an individual having 2 of
the same alleles….

While _________________________________________________ represents an individual having 2 different
alleles.
We can also use a ___________________________________ chart to show how individuals in a family are
related to one another, and to make genetic _______________________________________________.

When we make genetic _____________________________________________ we need to know the parents’
__________________________________ (or which variations they have for the trait).

Genetic Predictions can show us….
o The different types of __________________________________________________________________
they can produce.
o
The ________________________________________________________ of producing different types of
offspring.
Part 2: Crossword Puzzle Practice
-_- The school blocked my access to my crossword puzzle making website. So….. here it is lol…
1. A thick line in a PCR chart represents inheriting 2 of the __________ alleles inherited.
Answer:
2.
Which shape represents females in a pedigree chart?
Answer:
3. We get one allele from our mother’s _________ cell.
Answer:
4. If a person inherits 2 Dominant alleles for a trait, What will the person look like?
Answer:
5. We get one allele from our father’s _________ cell.
Answer:
6. All individuals inherit 2 of what per gene?
Answer:
7. Having 2 different allele variations for a trait.
Answer:
8. Which types of alleles always show up?
Answer:
9. How many recessive alleles need to be inherited together for it to show up?
Answer:
10. If a person inherits 1 Dominant and 1 Recessive allele for a trait, What will the person look like?
Answer:
11. If a person inherits 2 Recessive alleles for a trait, What will the person look like?
Answer:
12. Having 2 of the same allele variations for a trait.
Answer:
13. Which types of alleles only show up when 2 are inherited?
Answer:
14. Thin lines in a PCR chart represent inheriting 2 _____________ alleles inherited.
Answer:
15. Which shape represents males in a pedigree chart?
Answer:
Part 3: Genetic Predictions Practice
The following is a PCR Chart for 2 parents and their offspring:
F1
M1
O1
O2
O3
O4
O5
O6
O7
O8
You are also told that the mother is Homozygous Recessive for the trait.
1. Using Black for the Dominant Trait, and White for the Recessive Trait, draw out a picture to represent the
genotypes of the parents:
2. What variations can the mom pass on to her offspring in her eggs?
3. What variations can the dad pass on to his offspring in his sperm?
4. Set Up & Complete the following chart to show the possible offspring these 2 parents could produce:
5. List /Draw out all of the possible offspring these 2 parents could produce:
6. List out the percent chance of these 2 parents having each type of offspring:
7. Which trait would their kids look like? How do you know this?
8. Looking at the PCR Chart you see that they have kids either with a Solid Black Line, or 2 Thin Lines for their
genotypes. Does this make sense? Why or Why not?
9. Which types of allele variations must the children with the Solid Black Line have inherited?
Part 4: Genotype  Phenotype Practice
Normal Liver
Diseased Liver
DNA
Sequence
A-T-C-C-C-G-A-T-A-T-A-G
A-T-C-G-C-G-A-T-A-T-A-G
Amino Acid
Chain
Met-Val-Thr-Glu
Met-Pro-Thr-Glu
10. Use what you know about DNA, Nitrogenous Bases, and Proteins, to explain how a person’s genotype could
cause their body to develop the phenotype of a Diseased Liver instead of a Normal Liver:
Part 5: Pedigree Prediction Practice
2 parents decide that they want to have kids, but they are curious what the chances are of them passing on a family
disease. The disease happens to be a recessive trait. The mom is a carrier for the disease (meaning she has one allele
that is recessive), and the dad does not have the trait at all.
Again in answering any of the questions, use Black to represent the Dominant variation, and White to represent the
Recessive variation.
11. What would have to be the genotype of a person with the disease?
12. What must be the genotype of the mom?
How do you know this?
13. What must be the genotype of the dad?
How do you know this?
14. Draw / Set Up a Chart to make a prediction about the types of offspring this couple could produce:
15. List out the different GENOTYPES (and the PERCENT CHANCE OF EACH) the parents could produce in their
offspring:
16. List out the different PHENOTYPES (and the PERCENT CHANCE OF EACH) the parents could produce in their
offspring:
17. Draw a Pedigree now to show the parents (their genotypes), and the possible offspring they could produce: