
Concept explainers
a.
To determine:
The appearance of chromosome 1 after FISH having genotypes Del1/Del2.
Introduction:
Human chromosome 1 is a large metacentric chromosome. Some of the telomeric regions on the chromosome were barcoded by multicolor banding. Fluorescence In situ Hybridization technique (FISH) is used to label the DNA probes.
b.
To determine:
The appearance of chromosome 1 after FISH having genotypes Del1/+.
Introduction:
Multicolor banding is done towards the telomeric end of chromosome 1 using different fluorescent dyes. This technique of banding is called FISH. The banding pattern is unique for different genotypes.
c.
To determine:
The appearance of chromosome 1 after FISH having genotypes Inv1/+.
Introduction:
Inversion refers to a type of chromosomal mutation in which a segment of a chromosome gets reversed from one end to the other. Inversion is of two types, paracentric and pericentric inversion. Pericentric inversion includes the centromere, whereas; paracentric inversion does not involve centromere.
d.
To determine:
The appearance of chromosome 1 after FISH having genotypes Inv2/+.
Introduction:
Inversion can be classified into two types, paracentric and pericentric inversion. Pericentric inversion includes the centromere, whereas; paracentric inversion does not involve centromere.
e.
To determine:
The appearance of chromosome 1 after FISH having genotypes Inv2/Inv2.
Introduction:
The technique of banding the chromosomal region by using different fluorescent dyes is called FISH. The banding pattern is unique for different genotypes.

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Genetics: From Genes to Genomes
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