In balanced translocation heterozygotes, which pattern of chromosome segregation produces viable gametes and progeny?
A)adjacent-1 segregation
B)adjacent-2 segregation
C)alternate segregation
D)Adjacent-1 and alternate segregation are both viable.
E)Adjacent-1, adjacent-2, and alternate segregation are all viable.

Question

Quizplus · Accepted Answer

Alternate segregation, also known as 2:2 segregation, produces viable gametes and progeny in balanced translocation heterozygotes. In this pattern, the two normal chromosomes segregate together and the two translocated chromosomes segregate together, resulting in two balanced, but different, gametes. This segregation pattern ensures that the normal amount of genetic material is passed on to the offspring. Adjacent-1 and adjacent-2 segregation, on the other hand, produce unbalanced gametes that have duplications or deletions of genetic material, leading to developmental abnormalities or miscarriage.

In Balanced Translocation Heterozygotes, Which Pattern of Chromosome Segregation Produces