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Agriculture · Q67

Genetics And Plant Breeding

Graduate and Post Graduate · Agriculture · question 67

Q67

The resulting two daughter cells produced by bridge-breakage fusion cycle will have

A.
Duplication
B.
Deficiency
C.
Both A and B
Answer
D.
None of these

Answer: Option C

Solution

Answer: Option C
Solution:
The resulting two daughter cells produced by the bridge-breakage fusion cycle will have Both Duplication and Deficiency.
Breakage-fusion-bridge (BFB) cycle is a mechanism of chromosomal instability, discovered by Barbara McClintock in the late 1930s.
The BFB cycle begins when the end region of a chromosome, called its telomere, breaks off. When that chromosome subsequently replicates it forms two sister chromatids which both lack a telomere.