The condition in which an extra portion of a chromosome is present in each cell is called:
A) Reciprocal translocation
B) Partial trisomy
C) Inversion
D) Down syndrome

Question

Quizplus · Accepted Answer

Partial trisomy is a condition in which only an extra portion of a chromosome is present in each cell.
A reciprocal translocation occurs when breaks take place in two different chromosomes and the material is exchanged.
An inversion occurs when two breaks take place on a chromosome,followed by the reinsertion of the missing fragment at its original site,but in inverted order.
Down syndrome is an aneuploidy of the twenty-first chromosome.

The Condition in Which an Extra Portion of a Chromosome