Cystic Fibrosis Results from Mutations in a Single Gene That

question 53

Essay

Cystic fibrosis results from mutations in a single gene that lies on Chromosome 7.Only homozygous mutant (ff) individuals are sick; homozygous wild-type (FF) and heterozygous (Ff) individuals are healthy.A healthy married couple has one child with cystic fibrosis and the wife is pregnant with a second child.
A.What is the genotype of the mother? The father?
B.What is the chance that the second child will have cystic fibrosis?

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Definitions:

Source Of Cash

Various origins from which a company or individual can acquire cash, including operations, financing, and investing activities.

Accounts Payable

Monetary obligations a company has to its suppliers for items bought on credit, intended to be paid within a short period.

Inventory

The total stock of goods and materials held by a company, intended for sale or used in production.

Statement Of Cash Flows

A financial document showing how changes in balance sheet accounts and income affect cash and cash equivalents, breaking the analysis down to operating, investing, and financing activities.