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WorksheetsGenetic Inheritance
Total questions: 15
Worksheet time: 15mins
What is the term for a change in the DNA sequence?
Mutation
Replication
Transcription
Translation
differences in inherited characteristics between parent and offspring
genetic variation
genotype
alleles
phenotype
instructions that express our traits
genes
recessive allele
genotype
alleles
variations of a specific gene
alleles
phenotype
dominant allele
genetic variation
the "stronger" allele
dominant allele
recessive allele
phenotype
genes
the "weaker" allele
recessive allele
dominant allele
genotype
phenotype
A man with an autosomal dominant disorder has children with a woman who is healthy. The probability that their first child will inherit the disorder if the disorder allele is represented as "A" and the normal allele as "a" is (a) .
25%
50%
75%
100%
In an autosomal recessive inheritance pattern, two parents are carriers of a recessive allele for a genetic disorder. The chance that their child will be affected by the disorder is _____
25%
75%
10%
50%
If a man with an X-linked recessive disorder has children with a woman who does not carry the disorder, the probability that their daughters will be carriers is (a) .
0%
25%
50%
100%
In a family where both parents are carriers of an autosomal recessive disease, they have three children. The probability that at least one of their children will be affected by the disease is (a) .
25%
50%
57.81%
75%
A man with an X-linked recessive disorder and a woman who is a carrier for the same disorder have a child. What is the probability that their son will have the disorder?
25%
50%
75%
100%
For an autosomal dominant disorder, if one parent is heterozygous for the disorder and the other parent is homozygous normal, the probability that their child will be a carrier of the disorder is (a) .
0%
25%
50%
100%
Which of the following is an example of a Mendelian trait?
Eye color in humans
Height in humans
Blood type in humans
Skin color in humans
In a dihybrid cross between two heterozygous pea plants (RrYy), what is the expected phenotypic ratio of the offspring?
9:3:3:1
3:1
1:1
1:2:1
What is the probability that a child will inherit an autosomal recessive disorder if both parents are carriers?
25%
50%
75%
100%
