There are three type of Splicing signals 

Major U2-type or GU-AG introns

Minor U12-type or AU-AC introns

Minor U12-type with GU-AG introns (hybrid type)

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#Unit 8. Inheritance Biology

Polymeric Gene interaction (9:6:1) The combination of two dominant alleles that intensifies the phenotype or creates a median variation. 

Long                                          circular

                        A                                                                     

                                                                                           Disc shape

                       

Long                                                    circular

                         B  

 

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#Unit 8. Inheritance Biology

Sex determination, sex linkage, sex limited, and sex influenced characters) & Extra chromosomal inheritance

1. Sex-determining mechanisms include,

1. Chromosomal

2. Genic

3. Environmental

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#Unit 8. Inheritance Biology

TLS Online TPP Program

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#Unit 8. Inheritance Biology

XX-XO SEX DETERMINATION

The mechanism of sex determination in the grasshoppers studied by McClung

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#Unit 8. Inheritance Biology

XX-XY SEX DETERMINATION

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#Unit 8. Inheritance Biology

Pseudoautosomal 

Region Small region of the X and Y chromosomes that contains homologous gene sequences.