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TLS Online TPP Program

#Id: 2244

When a nonfunctioning duplicate is fixed in the population, or a functioning gene becomes nonfunctional, the result is a genetic skeleton called a pseudogene.
Deletions are important in shaping the genome.

#Unit 11. Evolution and Behavior #Gene Duplication and Divergence #Part B Pointers
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TLS Online TPP Program

#Id: 6277

#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  


















 
TLS Online TPP Program

#Id: 6326

#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
TLS Online TPP Program

#Id: 6327

#Unit 8. Inheritance Biology
TLS Online TPP Program

#Id: 6328

#Unit 8. Inheritance Biology

XX-XO SEX DETERMINATION

The mechanism of sex determination in the grasshoppers studied by McClung
TLS Online TPP Program

#Id: 6329

#Unit 8. Inheritance Biology

XX-XY SEX DETERMINATION
TLS Online TPP Program

#Id: 6330

#Unit 8. Inheritance Biology

Pseudoautosomal 

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