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- 1. Multiple Choice
How many alleles does a person carry for a trait?
1
2
3
4
- 2. Multiple Choice
How many alleles does a child get from each parent for a trait?
1
2
3
4
- 3. Multiple Choice
Dominant alleles are represented by a ---
capital letter.
lowercase letter.
- 4. Multiple Choice
Aa, DD, Bb, yy are all examples of ---
genotypes.
phenotypes.
- 5. Multiple Choice
In a heterozygous genotype, the _____ allele takes over in the phenotype.
recessive
dominant
both
- 6. Multiple Choice
What you see, or the physical appearance of an organism, is called the ---
genotype.
phenotype.
- 7. Multiple ChoiceWhat do we use pedigrees for?To look at familiesTo make determinations about the offspringTo track traits in familiesNothing
- 8. Multiple Choice
In a pedigree, which shape represents a male?
circle
square
- 9. Multiple Choice
Which gender has an X and a Y chromosome?
male
female
- 10. Multiple Choice
On a pedigree, this symbol represents a ---
not affected female.
not affected male.
affected male.
affected female.
- 11. Multiple Choice
On a pedigree, this symbol represents a ----
not affected male.
not affected female.
affected male.
affected female.
- 12. Multiple Choice
How many individuals are there in the 3rd generation?
1
2
4
6
- 13. Multiple Choice
How are individuals III-2 and II-4 related?
Brother and sister
Dad and daughter
Uncle and niece
Grandfather and granddaughter
- 14. Multiple Choice
What is the mode of inheritance shown here?
Recessive because it "skips" a generation
Dominant because it shows up in every generation
- 15. Multiple Choice
In the second generation of this pedigree, how many people are carriers of the trait? *Remember: a carrier does not have the disorder/disease, but can pass it on to his/her children.
1
2
3
5
- 16. Multiple Choice
On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -
the male is heterozygous and the female is heterozygous.
the male is homozygous recessive and the female is homozygous dominant.
- 17. Multiple Choice
Why do all the daughters in Generation II carry the colorblind gene?
Because mom passed on the gene.
Because dad passed on the X chromosome.
- 18. Multiple Choice
The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?
GG
Gg
gg
- 19. Multiple Choice
Which individual in the first generation is a carrier?
I-1
I-2
- 20. Multiple Choice
If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?
HH
Hh
hh
- Answer choicesTagsAnswer choicesTags