WorksheetsPunnett Squares & Pedigrees Review
Total questions: 15
Worksheet time: 11mins
When tracking a recessive genetic condition, which of the following genotypes would be considered a "carrier" that doesn't have the condition?
Homozygous recessive
Homozygous dominant
Heterozygous
In Punnett squares, dominant alleles are represented by a...
uppercase letter
How many alleles does a child get from each parent for each trait?
T = tall and t = short
In the punnett square, what belongs in the square with the question mark?
In the punnett square, what is the probability for white fur?
What is the correct genotype for individual I-2?
Tay-Sachs disease is a lethal, autosomal recessive genetic disorder. If both parents are heterozygous carriers of the disease, what are the chances of them having a child who is also a heterozygous carrier for Tay-Sachs?
25%
50%
75%
100%
If a child is homozygous recessive for a trait, what MUST be true about their parents?
Both parents must have at least one recessive allele
Only one parent has to have a recessive allele
One parent must be homozygous recessive, too
Both parents must be homozygous recessive
Is the pedigree shown here tracking a dominant or recessive trait?
Dominant
Recessive
This pedigree is tracking albinism, which is a recessive condition.
True or False: Individuals I1 and I2 are carriers for this trait.
True
False
This pedigree is tracking albinism, which is a recessive condition.
True or False: We know, for sure, the genotype of individual II3.
True
False
