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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. 




#Unit 8. Inheritance Biology #Structural and numerical alterations of chromosomes #Part B Pointers
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TLS Online TPP Program

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#Unit 5. Developmental Biology

High β-catenin + Nodal related high + Veg T, Vg1 = Organizer 
TLS Online TPP Program

#Id: 7175

#Unit 5. Developmental Biology

Nodal related low + Veg T, Vg1 = Ventral mesoderm
TLS Online TPP Program

#Id: 7176

#Unit 5. Developmental Biology

The “default fate” of the ectoderm is to become neural tissue
TLS Online TPP Program

#Id: 7177

#Unit 5. Developmental Biology

The ectoderm is induced to become epidermal tissue by BMPs
TLS Online TPP Program

#Id: 7178

#Unit 5. Developmental Biology
TLS Online TPP Program

#Id: 7179

#Unit 5. Developmental Biology

Siamois and Twin inducing the activation of the neuroepithelium genes – Foxd4 and Sox11