Explain the type of inheritance associated with Huntington’s disease and achondroplasia.

Suppose both parents can roll their tongues but their son cannot. Draw a pedigree showing this trait, and label each symbol with the appropriate genotype.

Phenylketonuria (PKU) is a recessive genetic disorder. If both parents are carriers, what is the probability of this couple having a child with PKU? What is the chance of this couple having two children with PKU?

In an experiment, 2.54 grams of copper completely reacts with sulfur, producing 3.18 grams of copper(I) sulfide. Write the chemical formula of the compound produced.

Pedigree chart symbols.

What is the pattern of inheritance of Huntington's disease?

Describe the inheritance pattern characterizing each of the following genetic diseases: (a) Cystic fibrosis: (b) Huntington's disease: (c) Sickle cell anemia:

Contrast the inheritance of Huntington's disease with the inheritance of sickle cell anemia.

Apply the law of segregation and the law of independent assortment by giving an example of each.

Explain why pedigrees are needed to identify the carriers of a recessive trait in a family.

Predict the phenotype of offspring from a test cross between a seedless orange (ss) and an orange with seeds (Ss).

Analyze how crossing over is related to variation.

What is the stratum corneum?

Let $\left(a_{n}\right)_{n \in \mathbb{N}}$ be a sequence such that $\liminf \left|a_{n}\right|=0$. Prove there is a subsequence $\left(a_{n_{k}}\right)_{k \in \mathbb{N}}$ such that $\sum_{k=1}^{\infty} a_{n_{k}}$ converges.