If a genetic counselor examines a pedigree chart and notices an occurrence of a disease in every generation,the counselor would assume that the disease was caused by
A) a new mutation.
B) an autosomal recessive disorder.
C) a chromosomal abnormality.
D) an autosomal dominant disorder.
E) having an extra set of chromosomes.

Question

Quizplus · Accepted Answer

Dominant alleles can be seen no matter what the other copy of the gene in a diploid organism is like.

If a Genetic Counselor Examines a Pedigree Chart and Notices