Innate behaviour

Reflex - Allow us to move in response to something in the environment.

The reflex which causes us to close our eyes when something flashes towards us, or to withdraw a foot when we step on a sharp object.

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#Id: 6275

#Unit 8. Inheritance Biology

Duplicate Dominant gene interaction (15:1) When dominant allele of both gene loci produce  the same phenotype without cumulative effect.

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#Id: 6276

#Unit 8. Inheritance Biology

Duplicate gene interaction occurs in shepherds purse plant. 

op                                           tringular

                 A

                                                                                                     Tringular         

Top                                    tringular   

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#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  

 

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#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

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#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