Type 1 fucosidosis is a rare human disease. Patients cannot hydrolyze the disaccharide fucose, and as a result have severe neurological decline and die by age 6. The disease is due to a defect in the gene that encodes the lysosomal enzyme that breaks down fucose (?-1-fucosidase), and is inherited in an autosomal recessive manner. Jane and John have a child who has Type 1 fucosidosis. What is the probability that their next two children will NOT have the disease?
A. None (all of their children will have the disease)
B. 1/2
C. 3/4
D. 1/8
E. 9/16
E. 9/16
Biology & Microbiology
You might also like to view...
The effect of nitrification is to:
a. convert ammonia into nitrates b. reduce nitrates to nitrites c. convert nitrogenous compounds into free nitrogen d. mimic nitrogen fixation e. convert nitrates to organic nitrogen
Biology & Microbiology
_______ refers to the combination of alleles that an individual has for a gene.
a) Polygenic inheritance b) Codominance c) Genotype d) Phenotype
Biology & Microbiology
Ribosomes are made up of which kind of nucleic acid?
A) mRNA B) tRNA C) rRNA D) DNA
Biology & Microbiology
In which of the three vertical intertidal zones is biodiversity the highest, and why?
What will be an ideal response?
Biology & Microbiology