Hutchinson-Gilford progeria is an exceedingly rare human genetic disorder in which there is very early senility and death, usually from coronary artery disease, at an average age of approximately 13. Patients, who look very old even as children, do not live to reproduce. Which of the following represents the most likely assumption?
A) All cases must occur in relatives; therefore, there must be only one mutant allele.
B) Successive generations of a family will continue to have more and more cases over time.
C) The disorder may be due to mutation in a single protein-coding gene.
D) Each patient will have had at least one affected family member in a previous generation.
E) The disease is autosomal dominant.
Inheritance of an X-linked recessive disorder
The pH of human blood ranges from 7.35 to 7.45.
Human Structure
The greatest bone mass is found around age 30 for both men and women, with the later decline being f
Microbes that have become model organisms for genetic studies
Fluorescent in situ hybridization (FISH) of human metaphase chromosomes