Precocious germination in the ABA-deficient vp14 mutant of maize. The VP14 protein catalyzes the cleavage of 9-cis-epoxycarotenoids to form xanthoxal, a precursor of ABA. 

TLS Online TPP Program

#Id: 6423

#Unit 8. Inheritance Biology

Autosomal dominant 

Traits appear in both sexes with equal frequency.

Both sexes are capable of transmitting these traits to their offspring.

An affected person has an affected parent (unless the person carries new mutations). 

The trait does not skip generations.

Unaffected people do not transmit the trait. 

Example- familial hypercholesterolemia, Huntington disease, Neurofibromatosis

TLS Online TPP Program

#Id: 6424

#Unit 8. Inheritance Biology

X-Linked Recessive Traits 

X-linked recessive traits appear more often in males than in females and are not passed from father to son.

Example – Hypophosphatemia , Rett syndrome

TLS Online TPP Program

#Id: 6425

#Unit 8. Inheritance Biology

X-Linked Dominant Traits

X-linked dominant traits affect both males and females. 

Although they often appear more frequently in females than in males.

Affected males must have affected mothers (unless the males possess a new mutation), and they pass the trait to all their daughters.

Affected daughters must have either an affected mother or an affected father.

X-linked dominant traits do not skip generations.

TLS Online TPP Program

#Id: 6426

#Unit 8. Inheritance Biology

Y-Linked Traits

Y-linked traits appear only in males and are passed from a father to all his sons.

Does not skip generations. Example – Hypertrichosis, Webbed toes

TLS Online TPP Program

#Id: 6427

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 6428

#Unit 8. Inheritance Biology