2. Mendel's Laws of Inheritance

In a family where both parents are heterozygous for a recessive genetic disorder (genotype Aa), what is the probability that, when a couple has two children, both children will be affected by the disorder?

In a family where one parent is heterozygous for Huntington's disease (an autosomal dominant disorder) and the other parent is unaffected, what is the percent probability that exactly four out of seven children will inherit Huntington's disease?

A couple has two female children. What is the probability that their next child will be male?

In a population of cats, the allele for short tails (T) is dominant over the allele for long tails (t). If the frequency of the T allele is 0.6, what is the expected frequency of cats with short tails in the population, assuming Hardy-Weinberg equilibrium?

In a population of wildflowers where the frequency of the red allele c_r is p = 0.7, what is the expected frequency of homozygous red individuals (c_r c_r) under Hardy-Weinberg equilibrium?

In a population where the allele frequencies of C and c are 0.7 and 0.3 respectively, what is the expected frequency of the cc genotype under Hardy-Weinberg equilibrium?

Mary and Justin are both heterozygous carriers for an autosomal recessive disorder. What is the probability that they will have an affected child?

What is the probability that the genotype aa will be produced from a cross between two parents with genotype aa x aa?

In a population of cats, the allele for long tails (L) is dominant over the allele for short tails (l). If the frequency of the dominant allele (L) is 0.7, what is the expected frequency of cats with long tails in the population, assuming Hardy-Weinberg equilibrium?

With four distinct nucleotides, how many different combinations are possible in a sequence of six nucleotides?

In a family where both parents are heterozygous carriers for cystic fibrosis (genotype Ff), what is the probability that their daughter Irene is a carrier (heterozygous) for the disease? Express your answer as a percentage.

In a pedigree where both parents are heterozygous (Ww) for a gene with complete dominance, what is the probability that their child, individual III-1, is homozygous recessive (ww)?

In a population of butterflies, the allele frequency of A is 0.7 and the allele frequency of a is 0.3. According to Hardy-Weinberg equilibrium, what is the expected frequency of the heterozygous genotype (Aa) in this population?

Charles has normal blood clotting, while Marie is a carrier for hemophilia (an X-linked recessive disorder). What is the probability that their female child will suffer from hemophilia?

If one parent is heterozygous (Aa) and the other is homozygous recessive (aa) for a dominant gene associated with Alzheimer's disease, what is the probability that their child will inherit the dominant gene?