The absorption of UV light by nucleic acids arises from n!p* and p!p* transitions of the purine (adenine, guanine) and pyrimidine (cytosine, thymine, uracil) bases that occur between 260 nm and 275 nm. 

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#Unit 8. Inheritance Biology

TLS Online TPP Program

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#Unit 8. Inheritance Biology

Burkitt lymphoma Burkitt lymphoma possess a reciprocal translocation between chromosome 8 and chromosome 2, 14, or 22.  This translocation relocates a gene called c-MYC is next to a gene that encodes an immunoglobulin protein.

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#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 6969

#Unit 8. Inheritance Biology

Aneuploidy

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#Unit 8. Inheritance Biology

Aneuploidy can arise in several ways

Chromosome may be lost during mitosis or meiosis.

The small chromosome generated by a Robertsonian translocation may be lost in mitosis or meiosis.

Aneuploidy may arise through nondisjunction.

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#Unit 8. Inheritance Biology

Types of Aneuploidy

Nullisomy is the loss of both members of a homologous pair of chromosomes. It is represented as 2n-2.

Monosomy is the loss of a single chromosome, represented as 2n-1. 

Trisomy is the gain of a single chromosome, represented as 2n+1. 

Tetrasomy is the gain of two homologous chromosomes, represented as 2n+2.