Tarzan and Jane are both normal, but their first child is affected with heroism, an autosomal recessive trait. What is the probability that their next child will also have the trait?

Charles has achondroplasia dwarfism (autosomal dominant) but his wife is normal. What is the likelihood that they will have a child with achondroplasia dwarfism? What is the likelihood that they will have embryos that will die from achondroplasia dwarfism? Please explain.

Mr. and Mrs. Jones have six children. Three of them have attached earlobes (recessive) like their father, and the other three have free earlobes like their mother. What are the genotypes of Mr. and Mrs. Jones and of their numerous offspring?

what is the probability that a couple (both heterozygous for the same recessive mutation) will have two children with the disease if the couple plans to have four children in total?

Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have a son with hemophilia.  They would like to have one more child. What is the probability of having a child without hemophilia? Explain using a Punnett square.   Is it possible for a girl to be born with hemophilia? Explain.

A patient has two parents with Huntington's disease. They may not have inherited this autosomal dominant disorder due to: 1) increased DNA repeats (CAG) during spermatogenesis 2) incomplete penetrance 3) inheriting one recessive allele

Two normal parents have a child with cyatic fibrosis. Would this be an autosomal dominant or autosomal recessive disorder? What is the chance that their next child will have cystic fibrosis?

A woman knows that her mother is a carrier of Kartagener’s syndrome (an autosomal recessive disorder). The woman does not know if either she or her husband are carriers. The couple wants to have a child, but is worried about whether or not they could have a child with Kartagener’s syndrome. Should the couple seek the advice of a genetic counselor? In other words, is there a chance they could have an affected child? If there is a chance, please make sure your answer includes the specific parental genotypes necessary to make this possible.

For a recessive condition, two normal heterozygous individuals have children. What is the likelihood of their children being affected by this condition? What is the likelihood of their children being carriers without the condition? What is the likelihood of their asymptomatic children being carriers? Suppose that an individual with the condition has children with a heterozygous individual, what is the likelihood of their children being carriers?

Cystic fibrosis (CF) is an autosomal recessive trait (a). Assume that Emily (who has CF) decides to have children with a man who does not have CF and who is not a carrier of CF. What are their genotypes, and what is the probability that they will have a child who is a carrier for CF?