3. In a population of cats, if the frequency of the dominant allele (A) is 0.7 and the frequency of the recessive allele (a) is 0.3, what is the expected frequency of cats that are homozygous dominant (AA)?

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?

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?

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 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?

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?

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

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