Mendelian
Non-Mendelian
Punnett Practice!
Pedigree
100
In pea plants, which Gregor Mendel studied, the allele for a purple flower is coded for by "P," while a white flower is coded by "p."
Based on this, which color is recessive?
White is recessive because it is represented by a lowercase letter.
100
A black chicken and a white chicken produce a checkered chicken (with black a white patches). What type of inheritance pattern is this?
Codominance.
100
In pea plants, the "tall allele" T is dominant to the short allele "t."
Draw the Punnett square:
A homozygous recessive pea plant is crossed with a heterozygous plant. What is the percent likelihood that their offspring is short?
50% short (tt)
50% tall (Tt)
100
True/ False: The following trait is likely recessive
False! There is no evidence of this trait skipping generations, so it is likely dominant.
200
What is this genotype called:
-Tt
?
Heterozygous
200
A white flower (WW) and a red flower (RR) produce pink flowers (RW). Explain why this is not an example of a Mendelian trait.
-Incomplete dominance
-Heterozygote does not show a "dominant trait" but has its own unique phenotype
-In Mendelian genetics there are only dominant a recessive phenotypes (the heterozygous shows the dominant phenotype)
200
Draw the Punnett Square:
A person with the AO and person with the BB genotype for blood type have a child. What are the possible blood types their child could have?
Possible blood types:
-AB
-B
200
How would you draw an "affected male" in a pedigree?
Shaded Square.
300
What is this genotype called:
-TT
?
(Use the full name)
Homozygous Dominant
300
In blood type, the A and B alleles are codominant, while O is recessive. Use this information to answer the question.
A person with the AA genotype for blood type has a child with a person with the BO genotype. Is it possible for their son to have type O blood.
No it is not possible because the son would need a copy of the O allele from both parents to be type O blood.
300
In humans the cleft chin trait is dominant "C" to the non-cleft chin allele "c." If a man has a cleft chin, and his mother does not, then what must his genotype be?
Heterozygous
Cc
300
How would you draw an "unaffected female" in a pedigree?
Unshaded circle.
400
How can you tell based on genotype that an organism has the dominant trait?
It must have at least one copy of the dominant allele.
400
In _________________ dominance the heterozygous individual show a blend of each trait. In _____dominance both trait show up in a mosaic.
Incomplete, Co-domiance
400
Draw the Punnett Square:
A hemophiliac woman and a normal man have a child. Assuming that this trait is x-linked recessive, what percent of the children will have hemophilia? Is there any gender bias (e.g., are there more boys or girls with the trait?)?
-50% hemophiliac children
-All boys
400
The following pedigree most likely represents what inheritance pattern?
Autosomal Recessive